DE938251C - Verfahren zur Herstellung von Thiophen-(2)-aldehyden - Google Patents
Verfahren zur Herstellung von Thiophen-(2)-aldehydenInfo
- Publication number
- DE938251C DE938251C DEA17645A DEA0017645A DE938251C DE 938251 C DE938251 C DE 938251C DE A17645 A DEA17645 A DE A17645A DE A0017645 A DEA0017645 A DE A0017645A DE 938251 C DE938251 C DE 938251C
- Authority
- DE
- Germany
- Prior art keywords
- thiophene
- aldehydes
- preparation
- aldehyde
- phosphorus oxychloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 title claims description 20
- 229930192474 thiophene Natural products 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 4
- 150000001299 aldehydes Chemical class 0.000 title claims 2
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- -1 N-substituted formanilide Chemical class 0.000 claims description 2
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical group [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 125000005843 halogen group Chemical group 0.000 claims description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- JIKUXBYRTXDNIY-UHFFFAOYSA-N n-methyl-n-phenylformamide Chemical compound O=CN(C)C1=CC=CC=C1 JIKUXBYRTXDNIY-UHFFFAOYSA-N 0.000 description 4
- QENGPZGAWFQWCZ-UHFFFAOYSA-N 3-Methylthiophene Chemical compound CC=1C=CSC=1 QENGPZGAWFQWCZ-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- TUCRZHGAIRVWTI-UHFFFAOYSA-N 2-bromothiophene Chemical compound BrC1=CC=CS1 TUCRZHGAIRVWTI-UHFFFAOYSA-N 0.000 description 1
- XQQBUAPQHNYYRS-UHFFFAOYSA-N 2-methylthiophene Chemical compound CC1=CC=CS1 XQQBUAPQHNYYRS-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012259 ether extract Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/22—Radicals substituted by doubly bound hetero atoms, or by two hetero atoms other than halogen singly bound to the same carbon atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/14—Radicals substituted by singly bound hetero atoms other than halogen
- C07D333/16—Radicals substituted by singly bound hetero atoms other than halogen by oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/24—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D333/28—Halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D333/30—Hetero atoms other than halogen
- C07D333/36—Nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D333/38—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
- C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D495/04—Ortho-condensed systems
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Compounds Containing Sulfur Atoms (AREA)
Description
- Verfahren zur Herstellung von Thiophen-(2)-aldehyden Die Erfindung betrifft ein Verfahren Zur Herstellung von Thiophen-(2)-aldehyden folgender allgemeiner Formel worin R2 ein Wasserstoffatom oder eine Alkylgruppe mit i bis q. Kohlenstoffatomen oder ein Halogenatom bedeutet. Zu ihrer Herstellung wird ein Thiophen folgender allgemeiner Formel: worin R2 die oben angegebene Bedeutung hat, in Gegenwart von Phosphoroxychlorid mit einem N-substituierten Formanilid der allgemeinen Formel in der R1 einen Phenylrest oder eine niedere Alkylgruppe bedeutet, bei erhöhter Temperatur umgesetzt. Das Reaktionsprodukt wird anschließend in Eiswasser gegossen und in üblicher Weise aufgearbeitet.
- Die Thiophen-(2)-aldehyde sind stabile Verbindungen die als Zwischenprodukte bei vielen chemischen Reaktionen verwendet werden können.
- Beispiel I Thiophen-(2)-aldehyd Zu einer Mischung von etwa 67,5g N-Methylformanilid und 76,59 Phosphoroxychlorid werden 50,4 g Thiophen gegeben, das Reaktionsgemisch wird mehrere Stunden auf einer Temperatur von 3o bis 35° gehalten und anschließend in ein Eis-Wasser-Gemisch gegossen. Die sich dabei abscheidende Ölschicht wird abgetrennt und mit den Ätherextrakten der wäßrigen Schicht vereinigt. Die erhaltene ätherische Lösung wird mit Natriumbicarbonat bis zur Neutralität gewaschen, dann der Äther abgedampft und der Rückstand destilliert. Der Thiophen-(2)-aldehyd wird in Form eines schwachgelben Öles vom Siedepunkt go bis gx° bei 25 mm Druck isoliert. Sein Phenylhydrazon schmilzt bei 137 bis z39°.
- Beispiel 2 3-Methyl-thiophen-(2)-aldehyd In analoger Weise wird unter Anwendung von etwa 353 g 3-Methylthiophen, 40,4 g N-Methylformanilid und q.5,9 g Phosphoroxychlorid 3-Methylthiophen-(2)-aldehyd erhalten, der einen Siedepunkt von 113 bis I14° bei 23 mm Druck hat (nö I,583o). Das Phenylhydrazon schmilzt bei 148 bis I49°. Beispiel 3 5-Brom-thiophen-(2)-aldehyd Durch Verarbeitung von etwa 58,7g 2-Bromthiophen, 40,5 g N-Methylformanilid und 45,9 g Phosphoroxychlorid erhält man in analoger Weise 5-Brom-thiophen-(2)-aldehyd, der bei 25 mm Druck einen Siedepunkt von 128 bis 12g° besitzt. Das Phenylhydrazon schmilzt bei 71 bis 73°.
- Beispiel 4 5-Methyl-thiophen-(2)-aldehyd Analog erhält man durch Behandlung einer Mischung von etwa 40,5 g N-Methylformanilid und 45,9 g Phosphoroxychlorid mit 35,3 g 2-Methylthiophen 5-Methyl-thiophen-(2)-aldeliyd, der bei 25 mm Druck einen Siedepunkt von 113 bis 1z4° hat MD' z,5782). Das Phenylhydrazon schmilzt bei i25 bis i26°.
Claims (1)
- PATENTANSPRUCH: Verfahren zur Herstellung von Thiophen-(2)-aldehyden, dadurch gekennzeichnet, daß ein, gegebenenfalls durch eine niedere Alkylgruppe mit I bis 4 Kohlenstoffatomen oder ein Halogenatom substituiertes Thiophen mit einem N-substituierten Formanilid der allgemeinen Formel worin R1 einen Phenylrest oder eine niedere Alkylgruppe bedeutet, in Gegenwart von Phosphoroxychlorid bei erhöhter Temperatur umgesetzt wird.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US938251XA | 1946-10-17 | 1946-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE938251C true DE938251C (de) | 1956-03-15 |
Family
ID=583030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEA17645A Expired DE938251C (de) | 1946-10-17 | 1949-01-01 | Verfahren zur Herstellung von Thiophen-(2)-aldehyden |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE938251C (de) |
-
1949
- 1949-01-01 DE DEA17645A patent/DE938251C/de not_active Expired
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