CN105237342B - 一种催化氢化羧酸酯还原制备醇的方法 - Google Patents
一种催化氢化羧酸酯还原制备醇的方法 Download PDFInfo
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- CN105237342B CN105237342B CN201510748129.5A CN201510748129A CN105237342B CN 105237342 B CN105237342 B CN 105237342B CN 201510748129 A CN201510748129 A CN 201510748129A CN 105237342 B CN105237342 B CN 105237342B
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- sodium
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- 238000000034 method Methods 0.000 title claims abstract description 45
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000009903 catalytic hydrogenation reaction Methods 0.000 title claims description 11
- 150000007942 carboxylates Chemical class 0.000 title claims description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 239000003054 catalyst Substances 0.000 claims abstract description 32
- -1 carboxylate compounds Chemical class 0.000 claims abstract description 16
- 150000001298 alcohols Chemical class 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000012327 Ruthenium complex Substances 0.000 claims abstract description 8
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 8
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 8
- 125000003118 aryl group Chemical group 0.000 claims abstract description 6
- 230000002829 reductive effect Effects 0.000 claims abstract description 6
- 125000001424 substituent group Chemical group 0.000 claims abstract description 6
- 239000003446 ligand Substances 0.000 claims abstract description 4
- 238000005984 hydrogenation reaction Methods 0.000 claims description 41
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 28
- 235000019441 ethanol Nutrition 0.000 claims description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 15
- 239000002904 solvent Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N isopropyl alcohol Natural products CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000852 hydrogen donor Substances 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 claims description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N anhydrous n-heptane Natural products CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 claims description 3
- FYGHSUNMUKGBRK-UHFFFAOYSA-N trimethylbenzene Natural products CC1=CC=CC(C)=C1C FYGHSUNMUKGBRK-UHFFFAOYSA-N 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 claims description 2
- 229910000024 caesium carbonate Inorganic materials 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 239000012046 mixed solvent Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 claims description 2
- 229930013930 alkaloid Natural products 0.000 claims 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 2
- 239000000463 material Substances 0.000 claims 2
- 229910000000 metal hydroxide Inorganic materials 0.000 claims 2
- 150000004692 metal hydroxides Chemical class 0.000 claims 2
- ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 2,3-dimethylbutane Chemical group CC(C)C(C)C ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 0.000 claims 1
- 238000006555 catalytic reaction Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- GPAYUJZHTULNBE-UHFFFAOYSA-N diphenylphosphine Chemical compound C=1C=CC=CC=1PC1=CC=CC=C1 GPAYUJZHTULNBE-UHFFFAOYSA-N 0.000 claims 1
- 239000003960 organic solvent Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 150000003053 piperidines Chemical class 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 9
- 239000003426 co-catalyst Substances 0.000 abstract description 7
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 abstract description 4
- DLAHAXOYRFRPFQ-UHFFFAOYSA-N dodecyl benzoate Chemical compound CCCCCCCCCCCCOC(=O)C1=CC=CC=C1 DLAHAXOYRFRPFQ-UHFFFAOYSA-N 0.000 abstract description 4
- 150000002194 fatty esters Chemical class 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 150000001733 carboxylic acid esters Chemical class 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 2
- ZGHPRZLWQFRWBF-UHFFFAOYSA-N 2-(2-diphenylphosphanylethyl)-5,6,7,8-tetrahydroquinolin-3-amine Chemical compound C1(=CC=CC=C1)P(C1=CC=CC=C1)CCC1=NC=2CCCCC=2C=C1N ZGHPRZLWQFRWBF-UHFFFAOYSA-N 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 39
- 150000002148 esters Chemical class 0.000 description 12
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 9
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 9
- MTZQAGJQAFMTAQ-UHFFFAOYSA-N ethyl benzoate Chemical compound CCOC(=O)C1=CC=CC=C1 MTZQAGJQAFMTAQ-UHFFFAOYSA-N 0.000 description 8
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 7
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 7
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 7
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 6
- JLCAMDSWNZBTEE-UHFFFAOYSA-N methyl 2-(trifluoromethyl)benzoate Chemical compound COC(=O)C1=CC=CC=C1C(F)(F)F JLCAMDSWNZBTEE-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 125000003342 alkenyl group Chemical group 0.000 description 4
- 125000005843 halogen group Chemical group 0.000 description 4
- 229940095102 methyl benzoate Drugs 0.000 description 4
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 4
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- XSIFPSYPOVKYCO-UHFFFAOYSA-N butyl benzoate Chemical compound CCCCOC(=O)C1=CC=CC=C1 XSIFPSYPOVKYCO-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 125000001309 chloro group Chemical group Cl* 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- JAVRNIFMYIJXIE-UHFFFAOYSA-N methyl 2-chlorobenzoate Chemical compound COC(=O)C1=CC=CC=C1Cl JAVRNIFMYIJXIE-UHFFFAOYSA-N 0.000 description 3
- QAFJIJWLEBLXHH-UHFFFAOYSA-N methyl 2-fluorobenzoate Chemical compound COC(=O)C1=CC=CC=C1F QAFJIJWLEBLXHH-UHFFFAOYSA-N 0.000 description 3
- YXZNVLYXBIIIOB-UHFFFAOYSA-N methyl 3-fluorobenzoate Chemical compound COC(=O)C1=CC=CC(F)=C1 YXZNVLYXBIIIOB-UHFFFAOYSA-N 0.000 description 3
- QSSJZLPUHJDYKF-UHFFFAOYSA-N methyl 4-methylbenzoate Chemical compound COC(=O)C1=CC=C(C)C=C1 QSSJZLPUHJDYKF-UHFFFAOYSA-N 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- SESFRYSPDFLNCH-UHFFFAOYSA-N benzyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC1=CC=CC=C1 SESFRYSPDFLNCH-UHFFFAOYSA-N 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- QQHNNQCWKYFNAC-UHFFFAOYSA-N methyl 3-(trifluoromethyl)benzoate Chemical compound COC(=O)C1=CC=CC(C(F)(F)F)=C1 QQHNNQCWKYFNAC-UHFFFAOYSA-N 0.000 description 2
- VAZWXPJOOFSNLB-UHFFFAOYSA-N methyl 4-(trifluoromethyl)benzoate Chemical compound COC(=O)C1=CC=C(C(F)(F)F)C=C1 VAZWXPJOOFSNLB-UHFFFAOYSA-N 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003303 ruthenium Chemical class 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- GCIHZDWTJCGMDK-UHFFFAOYSA-N (2-methylphenyl) prop-2-enoate Chemical compound CC1=CC=CC=C1OC(=O)C=C GCIHZDWTJCGMDK-UHFFFAOYSA-N 0.000 description 1
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- IHCCLXNEEPMSIO-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 IHCCLXNEEPMSIO-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- FEXQDZTYJVXMOS-UHFFFAOYSA-N Isopropyl benzoate Chemical compound CC(C)OC(=O)C1=CC=CC=C1 FEXQDZTYJVXMOS-UHFFFAOYSA-N 0.000 description 1
- 229910010082 LiAlH Inorganic materials 0.000 description 1
- VXQQVDCKACIRQG-UHFFFAOYSA-N NNPP Chemical compound NNPP VXQQVDCKACIRQG-UHFFFAOYSA-N 0.000 description 1
- STSCVKRWJPWALQ-UHFFFAOYSA-N TRIFLUOROACETIC ACID ETHYL ESTER Chemical compound CCOC(=O)C(F)(F)F STSCVKRWJPWALQ-UHFFFAOYSA-N 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- 229960002903 benzyl benzoate Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- CCRCUPLGCSFEDV-UHFFFAOYSA-N cinnamic acid methyl ester Natural products COC(=O)C=CC1=CC=CC=C1 CCRCUPLGCSFEDV-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- BEPAFCGSDWSTEL-UHFFFAOYSA-N dimethyl malonate Chemical compound COC(=O)CC(=O)OC BEPAFCGSDWSTEL-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 125000006575 electron-withdrawing group Chemical group 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003818 flash chromatography Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 239000002815 homogeneous catalyst Substances 0.000 description 1
- 238000009905 homogeneous catalytic hydrogenation reaction Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 239000012280 lithium aluminium hydride Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- UXJRQNXHCZKHRJ-UHFFFAOYSA-N methyl 2,3,4,5,6-pentafluorobenzoate Chemical compound COC(=O)C1=C(F)C(F)=C(F)C(F)=C1F UXJRQNXHCZKHRJ-UHFFFAOYSA-N 0.000 description 1
- SWGQITQOBPXVRC-UHFFFAOYSA-N methyl 2-bromobenzoate Chemical compound COC(=O)C1=CC=CC=C1Br SWGQITQOBPXVRC-UHFFFAOYSA-N 0.000 description 1
- BXXLTVBTDZXPTN-UHFFFAOYSA-N methyl 2-iodobenzoate Chemical compound COC(=O)C1=CC=CC=C1I BXXLTVBTDZXPTN-UHFFFAOYSA-N 0.000 description 1
- DWRVHDWKWKFSAI-UHFFFAOYSA-N methyl 3,4-difluorobenzoate Chemical compound COC(=O)C1=CC=C(F)C(F)=C1 DWRVHDWKWKFSAI-UHFFFAOYSA-N 0.000 description 1
- YUHSMQQNPRLEEJ-UHFFFAOYSA-N methyl 3-(bromomethyl)benzoate Chemical compound COC(=O)C1=CC=CC(CBr)=C1 YUHSMQQNPRLEEJ-UHFFFAOYSA-N 0.000 description 1
- KMFJVYMFCAIRAN-UHFFFAOYSA-N methyl 3-bromobenzoate Chemical compound COC(=O)C1=CC=CC(Br)=C1 KMFJVYMFCAIRAN-UHFFFAOYSA-N 0.000 description 1
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- CZNGTXVOZOWWKM-UHFFFAOYSA-N methyl 4-bromobenzoate Chemical compound COC(=O)C1=CC=C(Br)C=C1 CZNGTXVOZOWWKM-UHFFFAOYSA-N 0.000 description 1
- LXNFVVDCCWUUKC-UHFFFAOYSA-N methyl 4-chlorobenzoate Chemical compound COC(=O)C1=CC=C(Cl)C=C1 LXNFVVDCCWUUKC-UHFFFAOYSA-N 0.000 description 1
- MSEBQGULDWDIRW-UHFFFAOYSA-N methyl 4-fluorobenzoate Chemical compound COC(=O)C1=CC=C(F)C=C1 MSEBQGULDWDIRW-UHFFFAOYSA-N 0.000 description 1
- CCRCUPLGCSFEDV-BQYQJAHWSA-N methyl trans-cinnamate Chemical compound COC(=O)\C=C\C1=CC=CC=C1 CCRCUPLGCSFEDV-BQYQJAHWSA-N 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- WMOVHXAZOJBABW-UHFFFAOYSA-N tert-butyl acetate Chemical compound CC(=O)OC(C)(C)C WMOVHXAZOJBABW-UHFFFAOYSA-N 0.000 description 1
- LYDRKKWPKKEMNZ-UHFFFAOYSA-N tert-butyl benzoate Chemical compound CC(C)(C)OC(=O)C1=CC=CC=C1 LYDRKKWPKKEMNZ-UHFFFAOYSA-N 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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Abstract
本发明公开了一种以2‑(二苯膦基乙基)‑(5,6,7,8‑四氢喹啉基)胺为配体的钌配合物催化剂,对羧酸酯类化合物氢化还原制备醇的方法。该催化剂对苯甲酸烷基酯、芳香酯、脂肪酯等具有高效的催化活性。本发明的制备方法简单,稳定性好,催化剂催化活性高,用量仅为底物摩尔量的0.025%~0.005%。用于醇类的生产,方法简单、环境污染小、收率高、成本低。使用式(1)配合物,以硼氢化钠为添加剂,成功的将大部分羧酸酯加氢还原成醇,并且转化数TON可达到50000,特别是对带有吸电子取代基的芳香酯,用助催化剂硼氢化钠代替大部分催化剂使用的醇类碱,使得成本降低,操作简便,易于工业化生产。
Description
技术领域
本发明涉及一种催化氢化羧酸酯还原成醇的方法,特别是一种利用含2-(二苯膦基乙基)-(5,6,7,8-四氢喹啉基)胺配体的钌配合物催化剂对羧酸酯类化合物氢化还原制备醇的方法,属于有机合成技术领域。
背景技术
由羧酸酯类化合物还原成醇类化合物,是有机化学合成中最重要的基本反应。传统的酯类化合物的还原一般利用高温高压(100-300 atm H2,200-300 ℃)、异相催化体系,能耗大,副反应多,或者用NaBH4或LiAlH4等金属还原试剂,试剂极易着火、爆炸,操作不安全,同时需要消耗当量或几倍当量于底物的金属还原试剂,会产生大量副产物,导致后处理操作繁琐麻烦,应用成本高,环境污染大。发展新型高效的酯的催化氢化催化剂,均相催化氢化还原有机酸酯,使其产生的副产物少,操作简单,安全性高,污染小,是一项具有重大意义的研究课题。目前研究的酯催化氢化的催化剂,主要有以下几种催化体系如下:Milstein小组(Zhang, J.; Leitus, G.; Ben-David, Y.; Milstein, D. Angew. Chem., Int. Ed. 2006, 45, 1113.)在2006首次报道了三齿钳式钌配合物,该配合物在温和的条件下(115 ℃,5.3 atm H2)对酯,尤其是对非官能团化的酯进行催化氢化,但该催化体系的效率很低,S/C只有100,不适合工业化生产。L.A.Saudan小组(Saudan, L. A.; Saudan, C. M.;Debieux, C.; Wyss, P. Angew. Chem., Int. Ed.2007, 46, 7473.)于2007报道了一种N-P四配位的钌配合物对酯进行催化氢化,在100 ℃、50 atm的条件下对一系列的酯底物进行氢化,TON达到了2000。2011年高砂公司(Kuriyama, W.; Matsumoto, T.; Ino, Y.;Ogata, O. WO2011048727A1, 2011; p 62)报道了PNP-Ru(Ru-MACHO)配合物对酯进行催化氢化,该配合物简单易得,已经有工业化应用的前景,但是催化效率仍然不高。SAITOSusumu小组(SAITO Susumu, WO2012102247A1, 2012, p 53)报道NNPP型配合物,使得催化效率得到了显著提高。D. G.Gusev分别于2012(Spasyuk, D.; Smith, S.; Gusev, D. G.Angew. Chem., Int. Ed. 2012, 51, 2772.)及2013(Spasyuk, D.; Smith, S.; Gusev, D. G. Angew. Chem., Int. Ed. 2013, 52, 2538.)年报道多种钌配合物对酯进行氢化,S/C得到较大的提高,反应条件也相对温和。在2014年周其林小组(Li, W.; Xie, J. H.;Yuan, M. L.; Zhou, Q. L. Green Chem. 2014, 16, 4081)报道了NNNP型式a钌配合物,在50 atm H2、25℃的条件下对一系列酯进行氢化还原,TON高达79000。张绪穆小组(Tan,X, F.; Wang, Y.; Liu, Y.; Wang, F.; Shi, L.; Lee, K.H.; Lin, Z.; Lv, H.;Zhang, X, M.Org. Lett. 2015, 17, 454.)于2015年报道的吡啶衍生物为配体,配位形成三个紧密五元环的NNPP型式b配合物在50 atm H2、80 ℃条件下对一系列酯进行催化氢化,TON高达80000。随后,Pidko小组(Pidko, E, A. DOI: 10.1021/jacs.5b04237.)报道了Ru-CNC型配合物,TON同样达到了79680。
上述介绍基本涵盖了羧酸酯氢化催化剂的最新进展,虽然酯的催化氢化在近10年来有了突出的进步,但由于催化剂的配体合成难以及催化剂使用成本较高,距离工业化应用仍有较大距离,因此开发具有更高催化活性,更加廉价的催化剂是均相催化剂当前发展的必然趋势。
发明内容
本发明的目的在于提供一种催化氢化羧酸酯还原制备醇的方法。
本发明的目的是通过以下技术方案实现的。本发明以2-(二苯膦基乙基)-(5,6,7,8-四氢喹啉基)胺钌配合物为催化剂,2-(二苯膦基乙基)-(5,6,7,8-四氢喹啉基)胺钌配合物如下式(1)所示:
以式(1)配合物为催化剂与氢供体进行反应式(2)所示的由羧酸酯还原成醇的方法,
式(2)中的R1和R2可以相同或不同,为烷基、芳基、烯基等。其中R1可为氢原子,另外上述烷基、芳基、烯基可具有取代基。烷基,列举碳数1-20、优选碳数1-10、更优选碳数1-5的直链或支链的烷基,例如,甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基等。作为芳基,列举碳数6-18,优选碳数6-12,更优选碳数为6,例如,苯基、萘基,蒽基等。作为苯基上的取代基,可列举甲基、甲氧基、羟基、羧基、卤族原子、硝基,氨基、三氟甲基、酯基等。优选具有拉电子能力的硝基、卤族原子、三氟甲基,更优选三氟甲基。作为卤族原子,可列举氟原子、氯原子、溴原子、碘原子。优选氯原子、溴原子。更优选氯原子。作为烯基可为直链或支链,例如碳数2-20的烯基,具体可以为乙烯基、丙烯基、丁烯基等。
本发明的制备醇的方法,所选加氢反应溶剂为易于溶解底物及催化剂的溶剂,可使用单一或混合溶剂。具体可以是甲苯、二甲苯、三甲苯等芳香烃,庚烷等脂肪烃;二氯甲烷、1,2-二氯乙烷等卤代烃;乙醚、四氢呋喃、1,4-二氧六环等醚类;甲醇、乙醇、异丙醇等醇类。其中优选醚类,特别优选四氢呋喃。溶剂的使用量可根据具体反应情况而定。
本发明使用的氢供体,可以是分子氢、异丙醇、甲酸等。优选分子氢。
催化剂的使用量可以根据具体氢化底物,反应条件而定。通常催化剂与底物的摩尔比范围为0.0001 %-10 %,优选为0.002 %-0.1 %。本发明中催化剂即式(1)配合物氢化温度为100-160℃,优选温度为120-140℃;氢气压力为20-60 atm,优选为40-50 atm;反应时间为4-48小时,优选为12-24小时。
羧酸酯氢化还原成醇主要通过气相色谱检测反应进程。气相仪器为Angilent6820,色谱柱为强极性柱,柱型号为19091N-113 HP-INNOWAX。反应完成后,主要通过简单的萃取,过滤,蒸馏,快速柱层析以各种色谱等常用纯化方法,分离得到目标醇类产物。
本发明催化氢化还需要加入合适的助催化剂(B),如碱类物质和金属硼氢化物等。所述的碱类物质主要有三乙胺、哌啶、吡啶、二异丙基乙基胺等胺类;碳酸钠、碳酸钾、碳酸铯等金属碳酸盐;氢氧化钾、氢氧化钠等金属氢氧化物;甲醇钠、乙醇钠、叔丁醇钠、叔丁醇钾等金属醇类物质;硼氢化钠、硼氢化钾、氢化铝锂等金属氢化物。优选硼氢化钠。
本发明取得的有益效果如下:
使用式(1)配合物,以硼氢化钠为添加剂,成功的将大部分羧酸酯加氢还原成醇,并且转化数(TON)达到50000,特别是对带有吸电子取代基的芳香酯,用硼氢化钠代替大部分催化剂使用的醇类碱,使得成本降低,操作简便,易于工业化生产。
具体实施方式
以下实施例用于说明本发明。需要指出,但本发明并不仅限于实施例。
实施例1
用配合物式(1)做为催化剂催化苯甲酸甲酯的氢化还原反应,用苯甲酸甲酯为底物,进行溶剂、温度、压力、(底物/催化剂)S/C的筛选实验,如下式(3)。在100 mL的玻璃瓶子中,依次加入催化剂(1)15-3.75 mg(0.02-0.005 mmol)、助催化剂(B)1-2mmol、苯甲酸甲酯1.36-13.60 g(10-100mmol,S:B:C=500-20000:50-200:1)、溶剂50-75 mL,将上述反应体系放入100 mL的高压反应釜内,置换氢气三次,冲入氢气30-50 atm,温度设置为100-120℃,加热搅拌反应时间4-36小时,将反应釜至于冰浴冷却至室温,放空气体。反应液经GC分析结果如表一所示。
表一:溶剂、温度、压力、S/C对氢化效率的影响a
| Entry | S/C | solvent | T(°C) | P (bar) | time (h) | yield(%)GC[b] |
| 1[c] | 500 | Ethanol | 120 | 50 | 24 | 0 |
| 2 | 500 | Ethanol | 120 | 50 | 24 | 15 |
| 3[c] | 500 | THF | 120 | 50 | 24 | 21 |
| 4[c] | 500 | THF | 120 | 50 | 24 | 16 |
| 5[c] | 500 | 1,4-dioxane | 120 | 50 | 24 | 93 |
| 6[c] | 2000 | 1,4-dioxane | 120 | 50 | 24 | 84 |
| 7 | 2000 | 1,4-dioxane | 120 | 50 | 6 | 95 |
| 8[e] | 2000 | 1,4-dioxane | 120 | 50 | 16 | 92 |
| 9 | 2000 | THF | 120 | 50 | 4 | 99(95[g]) |
| 10 | 2000 | THF | 100 | 50 | 8 | 99 |
| 11 | 2000 | THF | 100 | 30 | 12 | 95 |
| 12[f] | 2000 | THF | 120 | 50 | 24 | 59 |
| 13 | 8000 | THF | 120 | 50 | 16 | 93(90[g]) |
| 14 | 8000 | 1,4-dioxane | 120 | 50 | 6 | 49 |
| 15 | 20000 | THF | 120 | 50 | 36 | 48 |
[a] 实验条件:苯甲酸甲酯:20-100 mmol、催化剂(1):0.04-0.005 mmol、助催化剂:2-1 mmol NaBH4、溶剂:50 mL;[b] GC检测苯甲醇的转化率;[c] 助催化剂:2mmolKOtBu;[d] 助催化剂:2 mmolNaOMe;[e] 助催化剂:2 mmolNaOtBu;[f] 助催化剂:2mmol NaBH4, 1 mmolKOtBu;[g]产物分离收率,THF=四氢呋喃。
从表中可以看出,在四氢呋喃中,温度120℃,压力50 atm,S/C为2000-8000,催化剂能够显示出良好的活性。甚至将S/C放大到20000也能够取得48%的转化率。
用配合物式(1)做为催化剂催化苯甲酸烷基酯的氢化还原反应。通过下式(4)对苯甲酸烷基酯(实施例2-1-2-5)进行氢化,具体事例收率见表二。
实施例2-1
在100 mL的玻璃瓶子中,依次加入配合物(1)7.51 mg(0.01 mmol)、NaBH4 37.8 mg(1 mmol)、苯甲酸乙酯3.00 g(20 mmol,S:B:C=2000:20:1)、溶剂50 mL,将上述反应体系放入100 mL的高压反应釜内,置换氢气三次,冲入氢气50 atm,温度设置为120 ℃,加热搅拌反应时间12小时,将反应釜置于冰浴冷却至室温,放空气体。反应液经GC分析,结果见表2。
实施例2-2
除用苯甲酸异丙酯代替苯甲酸乙酯外,其进行氢化还原的方法与实施例2-1相同,结果见表2。
实施例2-3-2-4
除用苯甲酸正丁酯(实施例2-3)、苯甲酸苄酯(实施例2-4)代替苯甲酸乙酯外,其进行氢化还原的方法与实施例2-1相同,结果见表2。
实施例2-5
除用苯甲酸叔丁酯代替苯甲酸乙酯,反应时间24小时外,其进行氢化还原的方法与实施例2-1相同,结果见表2。
表二:催化剂催化苯甲酸烷基酯的氢化还原反应情况。
| 实施例 | R | 温度 (℃) | 时间 (h) | 转化率[b](%) |
| 1 | Me | 120 | 4 | 99 |
| 2-1 | Et | 120 | 12 | 99 |
| 2-2 | i-Pr | 120 | 12 | 98 |
| 2-3 | n-Bu | 120 | 12 | 97 |
| 2-4 | CH2Ph | 120 | 12 | 90 |
| 2-5 | t-Bu | 120 | 24 | 10 |
用配合物式(1)做为催化剂催化芳香酯的氢化还原反应,通过下式(5)对芳香酯(实施例3-1-3-18)进行氢化,具体结果见表三。
实施例3-1
在100 mL的玻璃瓶子中,依次加入配合物(1)7.51 mg(0.01 mmol)、NaBH4 43.7 mg(1 mmol), 邻氟苯甲酸甲酯3.08 g(20 mmol,S:B:C=2000:20:1)、溶剂50 mL,将上述反应体系放入100 mL的高压反应釜内,置换氢气三次,冲入氢气50 atm,温度设置为120 ℃,加热搅拌反应18小时,将反应釜置于冰浴冷却至室温,放空气体。反应液经GC分析具体结果见表三。
实施例3-2
除配合物(1)1.5 mg(0.002 mol)、NaBH4 17.48 mg (0.4 mmol)、
邻三氟甲基苯甲酸甲酯8.16 g(40 mmol,S:B:C =20000:100:1),加热搅拌反应28小时外,其进行氢化还原反应的方法与实施例3-1相同,具体结果见表三。
实施例3-3
除配合物(1)3.75 mg(0.005mmol)、NaBH4 87.4 mg (2 mmol)、邻氯苯甲酸甲酯6.84 g(40 mmol, S:B:C =8000:20:1),加热搅拌24小时外,其进行氢化还原的方法与实施例3-1相同,具体结果见表三。
实施例3-4
除邻溴苯甲酸甲酯8.60 g(40 mmol,S:B:C =8000:20:1)外,其进行氢化还原的方法与实施例3-3相同,具体结果见表三。
实施例3-5
除邻碘苯甲酸甲酯5.24 g(20 mol,S:B:C=2000:20:1),加热搅拌12小时外,其进行氢化还原反应的方法与实施例3-1相同,具体结果见表三。
实施例3-6
除用间氟苯甲酸甲酯(实施例3-6)代替邻氟苯甲酸甲酯外,其进行氢化还原反应的方法与实施例3-1相同,具体结果见表三。
实施例3-7-1
除用间三氟甲基苯甲酸甲酯代替邻三氟甲基苯甲酸甲酯(实施例3-2),加热搅拌18小时外,其进行氢化还原方法与实施例3-2相同,具体结果见表三。
实施例3-7-2
除配合物(1)0.751 mg(0.001 mmol)、NaBH4 189.15 mg (5 mmol)、邻三氟甲基苯甲酸甲酯20.14 g(100 mmol,S:B:C =100000:20:1),温度为140℃,加热搅拌反应30小时外,其进行氢化还原反应的方法与实施例3-1相同,具体结果见表三。
实施例3-8
除配合物(1)1.875 mg(0.0025 mmol)、NaBH4 87.4 mg (2 mmol)、邻氯苯甲酸甲酯6.84 g(40 mmol, S:B:C =16000:20:1),加热搅拌24小时外,其进行氢化还原的方法与实施例3-1相同,具体结果见表三。
实施例3-9
除间溴苯甲酸甲酯6.84 g(40 mmol, S:B:C =20000:100:1)代替邻三氟甲基苯甲酸甲酯(实施例3-2),加热搅拌24小时外,其进行氢化还原的方法与实施例3-2相同,具体结果见表三。
实施例3-10
除对氟苯甲酸甲酯6.16 g(40 mmol,S:B:C=20000:100:1)代替邻三氟甲基苯甲酸甲酯(实施例3-2),加热搅拌24小时外,其进行氢化还原的方法与实施例3-2相同,具体结果见表三。
实施例3-11-1
除用对三氟甲基苯甲酸甲酯代替邻三氟甲基苯甲酸甲酯(实施例3-2),加热搅拌18小时外,其进行氢化还原方法与实施例3-2相同,具体结果见表三。
实施例3-11-2
除用对三氟甲基苯甲酸甲酯代替间三氟甲基苯甲酸甲酯(实施例3-7-2),其进行氢化还原方法与实施例3-7-2相同,具体结果见表三。
实施例3-12
除用对氯苯甲酸甲酯代替间氯苯甲酸甲酯(实施例3-8)外,其进行氢化还原方法与实施例3-8相同,具体结果见表三。
实施例3-13
除对溴苯甲酸甲酯代替间溴甲基苯甲酸甲酯(实施例3-9)外,其进行氢化还原的方法与实施例3-9相同,具体结果见表三。
实施例3-14
除配合物(1)7.51 mg(0.01 mmol)、NaBH4 43.7 mg (1 mmol)、对甲氧基甲酸甲酯1.66 g(10 mmol, S:B:C =1000:10:1),加热搅拌24小时外,其进行氢化还原的方法与实施例3-1相同,具体结果见表三。
实施例3-15-3-16
除用对甲基苯甲酸甲酯1.5 g(实施例3-15)、邻苯二甲酸甲酯1.8 g(实施例3-16)代替对甲基苯甲酸甲酯(实施例3-14)外,其进行氢化还原的方法与实施例3-14相同,具体结果见表三。
实施例3-17-3-18
除用3,4-二氟苯甲酸甲酯6.88 g(实施例3-17)、五氟苯甲酸甲酯9.04 g(实施例3-18)代替邻氯苯甲酸甲酯(实施例3-3)外,其进行氢化还原的方法与实施例3-3相同,具体结果见表三。
从表三中可以看出,配合物(1)对苯环上具有拉电子集团的取代基有更高的催化活性。尤其对卤族中的氯原子和溴原子的苯甲酸甲酯衍生物,并且三氟甲基具有很强的拉电子能力,其TON高达56000。其对酯氢化还原成醇应用于工业化生产提供指导依据。
用配合物式(1)做为催化剂催化脂肪酯的氢化还原反应,通过下式(6)对芳香酯(实施例4-14-9)进行氢化,具体结果见表四。
实施例4-1
在100 mL的玻璃瓶子中,依次加入配合物(1)3.75 mg(0.005 mmol)、NaBH4 87.4mg(2 mmol), 三氟乙酸乙酯5.68g(40 mmol,S:B:C=8000:20:1)、溶剂50 mL,将上述反应体系放入100 mL的高压反应釜内,置换氢气三次,冲入氢气50 atm,温度设置为120℃,加热搅拌反应24小时,将反应釜置于冰浴冷却至室温,放空气体。反应液经GC分析,结果见表四。
实施例4-2
在100ml的玻璃瓶子中,依次加入配合物(1)7.51 mg(0.01mmol)、NaBH4 43.7 mg(1mmol), 乙酸甲酯1.48g(20mmol,S:B:C=2000:20:1)、溶剂
50 mL,将上述反应体系放入100 mL的高压反应釜内,置换氢气三次,冲入氢气50atm,温度设置为120℃,加热搅拌反应8小时,将反应釜置于冰浴冷却至室温,放空气体,反应液经GC分析,结果见表四。
实施例4-3
除用乙酸乙酯代替乙酸甲酯外,其进行氢化还原的方法与实施例4-2相同。反应液经GC分析,结果见表四。
实施例4-4
除用乙酸丙酯代替乙酸甲酯,加热搅拌12小时外,其进行氢化还原的方法与实施例4-2相同。反应液经GC分析,结果见表四。
实施例4-5
除用乙酸正丁酯酯代替乙酸甲酯,加热搅拌18小时外,其进行氢化还原的方法与实施例4-2相同。反应液经GC分析,结果见表四。
实施例4-6
除用乙酸叔丁酯代替乙酸甲酯,加热搅拌24小时外,其进行氢化还原的方法与实施例4-2相同。反应液经GC分析,结果见表四。
实施例4-7
除用异丙酸乙酯代替乙酸甲酯,加热搅拌12小时外,其进行氢化还原的方法与实施例4-2相同。反应液经GC分析,结果见表四。
实施例4-8
除用丙二酸二甲酯代替乙酸甲酯,加热搅拌,18小时外,其进行氢化还原的方法与实施例4-2相同。反应液经GC分析,结果见表四。
实施例4-9
除苯丙烯酸甲酯(肉桂酸甲酯)3.24 g代替邻氟苯甲酸甲酯(实施例3-1),加热搅拌18小时外,其进行氢化还原的方法与实施例3-1相同。反应液经GC分析,结果见表四。
表四:催化剂催化脂肪酯的氢化还原反应情况。
Claims (8)
1.一种催化氢化羧酸酯还原制备醇的方法,其特征在于:以含2-(二苯膦基乙基)-(5,6,7,8-四氢喹啉基)胺配体的钌配合物为催化剂及以碱类物质或金属硼氢化物为助催化剂,在有机溶剂中,对羧酸酯类化合物进行氢化还原制备醇,其中,催化剂2-(二苯膦基乙基)-(5,6,7,8-四氢喹啉基)胺钌配合物如下式(1)所示:
以式(1)配合物为催化剂与氢供体进行反应式(2)所示由羧酸酯还原成醇,
式(2)中的R1和R2是相同或不同的烷基或含有取代基的芳基,其中,烷基碳数1-20,芳基碳数6-18。
2.根据权利要求1所述的方法,其特征在于溶剂为:甲苯或二甲苯或三甲苯芳香烃;或庚烷脂肪烃;或二氯甲烷或1,2-二氯乙烷卤代烃;或乙醚或四氢呋喃或1,4-二氧六环醚类;或甲醇或乙醇或异丙醇醇类,单一或混合溶剂。
3.根据权利要求1所述的方法,其特征在于氢供体是分子氢、异丙醇、甲酸中的一种。
4.根据权利要求1所述的方法,其特征在于催化剂与底物的摩尔比为0.002%-0.1%。
5.根据权利要求1所述的方法,其特征在于式(1)配合物氢化温度为120-140℃;氢气压力为40-50atm;反应时间为12-24小时。
6.根据权利要求1所述的方法,其特征在于碱类物质是胺类或金属碳酸盐;或者是金属氢氧化物;或者是金属醇类物质。
7.根据权利要求6所述的方法,其特征在于碱类物质是三乙胺、哌啶、吡啶、二异丙基乙基胺其中的一种;金属碳酸盐是碳酸钠、碳酸钾、碳酸铯其中的一种;金属氢氧化物是氢氧化钾、氢氧化钠其中的一种;金属醇类物质是甲醇钠、乙醇钠、叔丁醇钠、叔丁醇钾其中一种。
8.根据权利要求1所述的方法,其特征在于金属硼氢化物为硼氢化钠。
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