KR20170036677A - 3-(3-클로로-1h-피라졸-1-일)피리딘의 제조 방법 - Google Patents
3-(3-클로로-1h-피라졸-1-일)피리딘의 제조 방법 Download PDFInfo
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- KR20170036677A KR20170036677A KR1020177000854A KR20177000854A KR20170036677A KR 20170036677 A KR20170036677 A KR 20170036677A KR 1020177000854 A KR1020177000854 A KR 1020177000854A KR 20177000854 A KR20177000854 A KR 20177000854A KR 20170036677 A KR20170036677 A KR 20170036677A
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- pyrazol
- pyridine
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- JRNVHPAWUHSFAL-UHFFFAOYSA-N 3-(3-chloropyrazol-1-yl)pyridine Chemical compound N1=C(Cl)C=CN1C1=CC=CN=C1 JRNVHPAWUHSFAL-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- NZUJZWKCHPWMTF-UHFFFAOYSA-N 1-pyridin-3-ylpyrazol-3-amine Chemical compound N1=C(N)C=CN1C1=CC=CN=C1 NZUJZWKCHPWMTF-UHFFFAOYSA-N 0.000 claims abstract description 25
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 15
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 12
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 150000001989 diazonium salts Chemical class 0.000 claims description 9
- 239000012954 diazonium Substances 0.000 claims description 8
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical group CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 6
- 235000010288 sodium nitrite Nutrition 0.000 claims description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 3
- XNOUFJKTHFFXRS-UHFFFAOYSA-N 2-(3-chloropyrazol-1-yl)pyridine Chemical compound N1=C(Cl)C=CN1C1=CC=CC=N1 XNOUFJKTHFFXRS-UHFFFAOYSA-N 0.000 claims description 2
- -1 3-bromopyridine Aminopyrazole Chemical compound 0.000 claims description 2
- 238000005187 foaming Methods 0.000 claims description 2
- NYPYPOZNGOXYSU-UHFFFAOYSA-N 3-bromopyridine Chemical compound BrC1=CC=CN=C1 NYPYPOZNGOXYSU-UHFFFAOYSA-N 0.000 abstract description 11
- JVVRJMXHNUAPHW-UHFFFAOYSA-N 1h-pyrazol-5-amine Chemical compound NC=1C=CNN=1 JVVRJMXHNUAPHW-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 7
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 125000001309 chloro group Chemical group Cl* 0.000 abstract description 3
- 125000003277 amino group Chemical group 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000725 suspension Substances 0.000 description 7
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- IJPFBRONCJOTTA-UHFFFAOYSA-N 5-chloro-1h-pyrazole Chemical compound ClC1=CC=NN1 IJPFBRONCJOTTA-UHFFFAOYSA-N 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- 238000000297 Sandmeyer reaction Methods 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000003818 flash chromatography Methods 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- NWPHYUJSBUUVRT-UHFFFAOYSA-N 3,4-dimethylpyrazole-1-sulfonamide Chemical compound CC1=CN(S(N)(=O)=O)N=C1C NWPHYUJSBUUVRT-UHFFFAOYSA-N 0.000 description 1
- XBDVJXXRYHXLCQ-UHFFFAOYSA-N 3-chloro-n,n-dimethylpyrazole-1-sulfonamide Chemical compound CN(C)S(=O)(=O)N1C=CC(Cl)=N1 XBDVJXXRYHXLCQ-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- URWNVNJGLPRJMQ-UHFFFAOYSA-N [Cl-]CNc(cc1)n[n]1-c1cnccc1 Chemical compound [Cl-]CNc(cc1)n[n]1-c1cnccc1 URWNVNJGLPRJMQ-UHFFFAOYSA-N 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004657 carbamic acid derivatives Chemical class 0.000 description 1
- 238000002451 electron ionisation mass spectrometry Methods 0.000 description 1
- 238000002330 electrospray ionisation mass spectrometry Methods 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- VHHHONWQHHHLTI-UHFFFAOYSA-N hexachloroethane Chemical compound ClC(Cl)(Cl)C(Cl)(Cl)Cl VHHHONWQHHHLTI-UHFFFAOYSA-N 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- RFYSRCRZAGKOIY-UHFFFAOYSA-N n,n-dimethylpyrazole-1-sulfonamide Chemical compound CN(C)S(=O)(=O)N1C=CC=N1 RFYSRCRZAGKOIY-UHFFFAOYSA-N 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
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- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Plural Heterocyclic Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Abstract
본 발명은 3-브로모피리딘을 시판 중인 3-아미노피라졸과 커플링시키고, 3-(3-아미노-1H-피라졸-1-일)피리딘을 결정화에 의하여 정제하고, 샌드마이어 반응에 의하여 아미노 기를 클로로 기로 전환시켜 3-(3-클로로-1H-피라졸-1-일)피리딘을 생성하는 방법에 관한 것이다.
Description
관련 출원에 대한 상호 참조
본원은 2014년 7월 31일자로 출원된 미국 가출원 제62/031,557호를 우선권주장하며, 전체 개시내용은 본원에 참조로 명백하게 포함된다.
본 발명은 3-(3-클로로-1H-피라졸-1-일)피리딘의 개선된 제조 방법에 관한 것이다.
US 20130288893 (A1)에는 특히 특정한 (3-할로-1-(피리딘-3-일)-1H-피라졸-4-일)아미드 및 카르바메이트 및 그의 살충제로서의 용도가 기재되어 있다. 상기 화합물을 제조하는 경로는 3-브로모피리딘을 3-클로로피라졸과의 직접 커플링에 의한 3-(3-클로로-1H-피라졸-1-일)피리딘의 제조를 포함한다. 3-클로로피라졸은 a) 1H-피라졸을 2-디메틸술파모일 클로라이드 및 수소화나트륨으로 처리하여 N,N-디메틸-1H-피라졸-1-술폰아미드를 제공하고, b) N,N-디메틸-1H-피라졸-1-술폰아미드를 퍼클로로에탄 및 n-부틸 리튬으로 처리하여 3-클로로-N,N-디메틸-1H-피라졸-1-술폰아미드를 제공하고, c) 트리플루오로아세트산을 사용하여 N,N-디메틸술폰아미드를 3-클로로-N,N-디메틸-1H-피라졸-1-술폰아미드로부터 제거하여 3-클로로피라졸을 산출하여 생성되었다.
개시된 방법은 낮은 수율로 생성되며, 생성하기가 곤란한 출발 물질(3-클로로피라졸)에 의존하며, 순수한 형태로 분리하기 힘든 생성물을 제공한다. 이러한 문제를 배제한 3-(3-클로로-1H-피라졸-1-일)피리딘 (5b)의 제조 방법이 바람직하다.
본 발명은 3-브로모피리딘을 시판 중인 3-아미노피라졸과 커플링시키고, 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)을 결정화에 의하여 정제하고, 아미노 기를 클로로 기로 샌드마이어(Sandmeyer) 반응에 의하여 전환시킴으로써 이러한 대안을 제공한다. 따라서, 본 발명은 하기 화학식 5b의 3-(3-클로로-1H-피라졸-1-일)피리딘의 제조 방법에 관한 것이며:
<화학식 5b>
a) 수-혼화성 극성 비양성자성 유기 용매 중에서 약 75℃ 내지 약 155℃의 온도에서 촉매량의 염화구리(I) 및 염기의 존재하에서 의 3-브로모피리딘을 의 3-아미노피라졸로 처리하여 하기 화학식 8a의 3-(3-아미노-1H-피라졸-1-일)피리딘을 제공하고:
<화학식 8a>
b) 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)을 물로부터 결정화시키고;
c) 약 0℃ 내지 약 25℃의 온도에서 수성 염산 중의 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)을 아질산나트륨으로 처리하여 하기 화학식 8b의 디아조늄 염을 제공하고:
<화학식 8b>
d) 디아조늄 염 (8b)을 염화구리로 약 0℃ 내지 약 25℃의 온도에서 처리하는 것을 포함한다.
본 발명은 3-브로모피리딘을 시판 중인 3-아미노피라졸과 커플링시키고, 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)을 결정화에 의하여 정제하고, 아미노 기를 클로로 기로 샌드마이어 반응에 의하여 전환시켜 3-(3-클로로-1H-피라졸-1-일)피리딘 (5b)를 제조하는 개선된 방법을 제공한다.
제1 단계에서, 수-혼화성 극성 비양성자성 유기 용매 중에서 약 75℃ 내지 약 155℃의 온도에서 촉매량의 염화구리 및 염기의 존재하에서 3-브로모피리딘을 3-아미노피라졸과 커플링시켜 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)을 제공한다. 화학량론적 양의 3-브로모피리딘 및 3-아미노피라졸이 요구되는 한편, 종종 과량의 3-아미노피라졸을 사용하는 것이 간편하다. 약 10 몰% 내지 약 50 몰%의 과량의 3-아미노피라졸이 바람직하다. 커플링은 약 5 몰% 내지 약 50 몰% 염화구리, 바람직하게는 약 15 몰% 내지 약 30 몰% 염화구리의 존재하에서 실시된다. 염화구리는 염화구리(I) 또는 염화구리(II)일 수 있다. 커플링은 또한 염기의 존재하에서 실시된다. 화학량론적 양의 3-브로모피리딘 및 염기가 요구되는 한편, 약 1.5 배 내지 약 2 배 과량의 염기를 사용하는 것이 간편하다. 알칼리 금속 탄산염이 바람직한 염기이다. 커플링은 수-혼화성 극성 비양성자성 유기 용매 중에서 수행된다. 물 중에서 가용성인 극성 비양성자성 유기 용매는 니트릴, 예컨대 아세토니트릴, 술폭시드, 예컨대 디메틸 술폭시드 및 아미드, 예컨대 N-메틸피롤리디논, N,N-디메틸포름아미드 및 N,N-디메틸아세트아미드를 포함한다. N,N-디메틸포름아미드가 특히 바람직하다.
통상의 반응에서, 염화구리(I), 3-아미노피라졸, 탄산칼륨 및 N,N-디메틸포름아미드는 질소 분위기 하에서 반응 용기에 넣고, 3-브로모피리딘을 서서히 첨가한다. 혼합물을 약 110℃에서 대부분의 3-브로모피리딘이 반응될 때까지 가열한다. 혼합물을 냉각시키고, 대부분의 용매를 감압 하에서 제거한다. 미정제 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)을 간편하게 물로부터의 결정화에 의하여 단리하고 정제하였다.
그 후, 정제된 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)은 수성 염산 중에서 약 0℃ 내지 약 25℃의 온도에서 아질산나트륨으로 처리하여 디아조늄 염을 제공한 후, 디아조늄 염을 염화구리로 약 0℃ 내지 약 25℃의 온도에서 처리하여 원하는 3-(3-클로로-1H-피라졸-1-일)피리딘 (5b)으로 전환된다. 화학량론적 양의 시약이 요구되는 한편, 종종 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)에 관하여 과량의 시약을 사용하는 것이 편리하다. 따라서, 수성 염산을 반응 매체로서 매우 과량으로 사용한다. 아질산나트륨은 약 1.5 배 내지 약 2 배 과량으로 사용된다. 염화구리는 약 5 몰% 내지 약 50 몰% 과량, 바람직하게는 약 15 몰% 내지 약 30 몰% 과량으로 사용된다. 염화구리는 염화구리(I), 염화구리(II) 또는 구리 분말일 수 있다. 반응 중에 발포를 억제하기 위하여, 염화구리를 사용한 디아조늄 염의 처리 중에 수-비혼화성 유기 용매, 예컨대 톨루엔 또는 클로로포름을 첨가할 수 있다.
통상의 반응에서, 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a) 및 수성 염산의 혼합물을 혼합하고, 약 0℃로 냉각시켰다. 약 5℃ 미만의 온도를 유지하면서 아질산나트륨의 수용액을 서서히 첨가하였다. 현탁액을 약 0℃에서 약 2 시간 동안 교반하였다. 별도의 용기 내에서, 염화구리 (I) 및 톨루엔의 혼합물을 약 0℃로 냉각시키고, 온도를 약 5℃ 미만으로 유지하는 속도에서 디아조늄 염의 냉각된 현탁액을 첨가하였다. 혼합물을 대략 상온으로 가온되도록 하였다. 반응의 완료 후, 혼합물을 수성 수산화나트륨으로 처리하여 pH를 약 8 내지 약 10으로 조절하였다. 생성된 용액을 수-비혼화성 유기 용매로 추출하였다. 용매의 제거 후, 3-(3-클로로-1H-피라졸-1-일)피리딘 (5b)을 그 다음 단계에서 직접 사용할 수 있거나 또는 플래쉬 컬럼 크로마토그래피 또는 결정화와 같은 표준 기법에 의하여 추가로 정제할 수 있다.
하기 실시예는 본 발명을 예시하기 위하여 제시한다.
실시예
1. 3-(3-아미노-1H-
피라졸
-1-일)피리딘 (8a)의 제조
4목 둥근 바닥 플라스크 (500 ㎖)에 염화구리 (I) (2.51 g, 25.3 mmol), 1H-피라졸-3-아민 (15.8 g, 190 mmol), 탄산칼륨 (35.0 g, 253 mmol) 및 N,N-디메틸포름아미드 (100 ㎖)를 넣었다. 혼합물을 질소 하에서 10 분 동안 교반하고, 3-브로모피리딘 (12.2 ㎖, 127 mmol)을 첨가하였다. 혼합물을 110℃에서 18 시간 동안 가열하고, 이 시점에서 HPLC 분석은 ~15.5% 3-브로모피리딘이 잔존하였다는 것을 나타냈다. 반응을 20℃로 냉각되도록 하고, 농축시켜 갈색 잔류물을 얻었다. 물 (200 ㎖)을 첨가하고, 생성된 현탁액을 20℃에서 2 시간 동안 교반하고, 여과하였다. 고체를 물 (2×50 ㎖)로 헹구고, 건조시켜 담녹색 고체를 얻었다. 고체를 물 (200 ㎖) 중에 현탁시키고, 생성된 현탁액을 90℃에서 2 시간 동안 가열하고, 셀라이트(Celite)? 패드를 통하여 고온 여과하였다. 패드를 고온수 (50 ㎖)로 헹구었다. 합한 여과액을 20℃로 냉각되도록 하여 황색 현탁액을 얻고, 이를 20℃에서 2 시간 동안 교반하고, 여과하였다. 고체를 물 (2×50 ㎖)로 헹구고, 공기 건조시켜 원하는 생성물을 담황색 결정질 고체 (11.6 g, 57%)로서 얻었다: mp 169-172℃; 1H NMR (400 MHz, DMSO-d6) δ 9.07 - 8.82 (m, 1H), 8.33 (dd, J = 4.6, 1.5 Hz, 1H), 8.24 (d, J = 2.6 Hz, 1H), 8.00 (ddd, J = 8.4, 2.7, 1.4 Hz, 1H), 7.42 (ddd, J = 8.5, 4.6, 0.8 Hz, 1H), 5.80 (d, J = 2.6 Hz, 1H), 5.21 (s, 2H); 13C NMR (101 MHz, DMSO-d6) δ 157.67, 144.68, 138.00, 136.22, 128.30, 123.95, 123.17, 97.08; ESIMS m/z 161 ([M+H]+).
2. 3-(3-
클로로
-1H-
피라졸
-1-일)피리딘 (5b)의 제조
3목 둥근 바닥 플라스크 (100 ㎖)에 3-(3-아미노-1H-피라졸-1-일)피리딘 (0.500 g, 3.12 mmol) 및 염산 (37 중량%, 3 ㎖)을 넣었다. 혼합물을 0℃로 냉각시키고, 물 (3 ㎖) 중의 아질산나트륨 (0.431 g, 6.24 mmol)의 용액을 일부분씩 <5℃에서 첨가하였다. 생성된 황색 현탁액을 0℃에서 2 시간 동안 교반하였다. 별도의 3목 둥근 바닥 플라스크 (100 ㎖)에 염화구리 (I) (0.371 g, 3.75 mmol) 및 톨루엔 (3 ㎖)을 넣었다. 이를 0℃로 냉각시키고, 황색 현탁액을 일부분씩 <5℃에서 첨가하였다. 생성된 혼합물을 20℃로 가온되도록 하고, 18 시간 동안 교반하였다. 50% 수산화나트륨을 사용하여 pH 10으로 염기화하고, 에틸 아세테이트 (2×20 ㎖)로 추출하였다. 유기층을 농축 건조시키고, 잔류물을 용리제로서 0-10% 에틸 아세테이트/헥산을 사용하는 플래쉬 컬럼 크로마토그래피에 의하여 정제하였다. 원하는 생성물을 함유하는 분획을 농축시켜 표제 화합물을 백색 고체 (0.340 g, 61%)로서 얻었다: mp 104-106℃; 1H NMR (400 MHz, CDCl3) δ 8.93 (d, J = 27 Hz, 1H), 8.57 (dd, J = 4.8, 1.4 Hz, 1H), 8.02 (ddd, J = 8.3, 2.7, 1.5 Hz, 1H), 7.91 (d, J = 2.6 Hz, 1H), 7.47-7.34 (M, 1H), 6.45 (d, J = 2.6 Hz, 1H); 13C NMR (101 MHz, CDCl3) δ 148.01, 142.72, 140.12, 135.99, 128.64, 126.41, 124.01, 108.08; EIMS m/z 179 ([M]+).
Claims (4)
- 하기 화학식 5b의 3-(3-클로로-1H-피라졸-1-일)피리딘의 제조 방법이며,
<화학식 5b>
(a) 수-혼화성 극성 비양성자성 유기 용매 중에서 약 75℃ 내지 약 155℃의 온도에서 촉매량의 염화구리 및 염기의 존재하에서 의 3-브로모피리딘을 의 3-아미노피라졸로 처리하여 하기 화학식 8a의 3-(3-아미노-1H-피라졸-1-일)피리딘을 제공하고:
<화학식 8a>
;
b) 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)을 물로부터 결정화시키고;
c) 약 0℃ 내지 약 25℃의 온도에서 수성 염산 중의 3-(3-아미노-1H-피라졸-1-일)피리딘 (8a)을 아질산나트륨으로 처리하여 하기 화학식 8b의 디아조늄 염을 제공하고:
<화학식 8b>
;
d) 디아조늄 염 (8b)을 염화구리로 약 0℃ 내지 약 25℃의 온도에서 처리하는 것을 포함하는, 화학식 5b의 3-(3-클로로-1H-피라졸-1-일)피리딘의 제조 방법. - 제1항에 있어서, 수-혼화성 극성 비양성자성 유기 용매가 아세토니트릴, 디메틸 술폭시드, N-메틸피롤리디논, N,N-디메틸포름아미드 또는 N,N-디메틸아세트아미드인 방법.
- 제2항에 있어서, 수-혼화성 극성 비양성자성 유기 용매가 N,N-디메틸아세트아미드인 방법.
- 제1항에 있어서, 수-비혼화성 유기 용매가 발포를 억제하기 위해 단계 d)에서 첨가되는 것인 방법.
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| JP2017523168A (ja) * | 2014-07-31 | 2017-08-17 | ダウ アグロサイエンシィズ エルエルシー | 3−(3−クロロ−1h−ピラゾール−1−イル)ピリジンの製造方法 |
| BR112017000293A2 (pt) | 2014-07-31 | 2017-10-31 | Dow Agrosciences Llc | processo para a preparação de 3-(3-cloro-1h-pirazol-1-il)piridina |
| US9249122B1 (en) | 2014-07-31 | 2016-02-02 | Dow Agrosciences Llc | Process for the preparation of 3-(3-chloro-1H-pyrazol-1-yl)pyridine |
| JP2017525703A (ja) | 2014-08-19 | 2017-09-07 | ダウ アグロサイエンシィズ エルエルシー | 3−(3−クロロ−1h−ピラゾール−1−イル)ピリジンの調製方法 |
| AR098113A1 (es) | 2014-09-12 | 2016-05-04 | Dow Agrosciences Llc | Proceso para la preparación de 3-(3-cloro-1h-pirazol-1-il)piridina |
-
2014
- 2014-10-17 JP JP2017501350A patent/JP2017523168A/ja active Pending
- 2014-10-17 CN CN201480080501.3A patent/CN106488908A/zh active Pending
- 2014-10-17 WO PCT/US2014/061023 patent/WO2016018443A1/en not_active Ceased
- 2014-10-17 BR BR112017000418A patent/BR112017000418A2/pt not_active Application Discontinuation
- 2014-10-17 EP EP14898415.6A patent/EP3186229A4/en not_active Withdrawn
- 2014-10-17 CA CA2954747A patent/CA2954747A1/en not_active Abandoned
- 2014-10-17 US US14/517,357 patent/US9029556B1/en not_active Expired - Fee Related
- 2014-10-17 KR KR1020177000854A patent/KR20170036677A/ko not_active Withdrawn
- 2014-10-17 AR ARP140103916A patent/AR098110A1/es active IP Right Grant
-
2015
- 2015-03-24 US US14/666,822 patent/US9371310B2/en not_active Expired - Fee Related
- 2015-07-28 TW TW104124374A patent/TW201609695A/zh unknown
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2016
- 2016-05-03 US US15/145,152 patent/US9573931B2/en not_active Expired - Fee Related
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2017
- 2017-01-09 IL IL249987A patent/IL249987A0/en unknown
- 2017-01-11 ZA ZA2017/00243A patent/ZA201700243B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN106488908A (zh) | 2017-03-08 |
| AR098110A1 (es) | 2016-05-04 |
| BR112017000418A2 (pt) | 2017-11-07 |
| US20160031849A1 (en) | 2016-02-04 |
| WO2016018443A1 (en) | 2016-02-04 |
| ZA201700243B (en) | 2019-06-26 |
| TW201609695A (zh) | 2016-03-16 |
| US9029556B1 (en) | 2015-05-12 |
| IL249987A0 (en) | 2017-03-30 |
| JP2017523168A (ja) | 2017-08-17 |
| EP3186229A1 (en) | 2017-07-05 |
| EP3186229A4 (en) | 2018-01-10 |
| CA2954747A1 (en) | 2016-02-04 |
| US9573931B2 (en) | 2017-02-21 |
| US20160244427A1 (en) | 2016-08-25 |
| US9371310B2 (en) | 2016-06-21 |
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