IE781441L - Preparation of esters of cyclopropane carboxylic acids - Google Patents
Preparation of esters of cyclopropane carboxylic acidsInfo
- Publication number
- IE781441L IE781441L IE781441A IE144178A IE781441L IE 781441 L IE781441 L IE 781441L IE 781441 A IE781441 A IE 781441A IE 144178 A IE144178 A IE 144178A IE 781441 L IE781441 L IE 781441L
- Authority
- IE
- Ireland
- Prior art keywords
- carbon atoms
- group
- preparation
- compounds
- esters
- Prior art date
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Compounds of the general formula <IMAGE> in which R<1> and R<2> in each case stand for an alkyl group having 1 to 4 carbon atoms or together form an alkylene group having up to 5 carbon atoms, X<1> and X<2> in each case stand for a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or for a halogen atom or, with one another, form an alkylene group having up to 5 carbon atoms or X<1> denotes a hydrogen atom and X<2> is a monohalovinyl, dihalovinyl or dimethylvinyl group and R stands for a methyl or ethyl group, are prepared. A procedure is used in which a cyclopropanenitrile of the general formula <IMAGE> is reacted with methanol or ethanol under substantially anhydrous conditions at a temperature from 80 to 200 DEG C and in the presence of a mineral acid as a reaction catalyst and of a scavenging agent for the ammonia formed during the reaction. The compounds of the formula I are intermediates for the preparation of synthetic pyrethroids.
[GB1599888A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB30470/77A GB1599888A (en) | 1977-07-20 | 1977-07-20 | Preparation of methyl and ethyl esters of cyclopropane carboxylic acids |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE781441L true IE781441L (en) | 1979-01-20 |
| IE47130B1 IE47130B1 (en) | 1983-12-28 |
Family
ID=10308187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE1441/78A IE47130B1 (en) | 1977-07-20 | 1978-07-18 | Preparation of methyl and ethyl esters of cyclopropane carboxylic acids |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5422345A (en) |
| BE (1) | BE868901A (en) |
| BR (1) | BR7804637A (en) |
| CA (1) | CA1123004A (en) |
| CH (1) | CH635064A5 (en) |
| DE (1) | DE2831555A1 (en) |
| DK (1) | DK158343C (en) |
| FR (1) | FR2398042A1 (en) |
| GB (1) | GB1599888A (en) |
| IE (1) | IE47130B1 (en) |
| IT (1) | IT1097870B (en) |
| LU (1) | LU79993A1 (en) |
| NL (1) | NL7807658A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ185635A (en) * | 1976-11-18 | 1980-04-28 | Ici Ltd | Preparation of 3-dihalovinyl-2,2-dimethylcyclopropane carboxylic acid derivatives |
| AU4839279A (en) * | 1978-07-18 | 1980-01-24 | Imperial Chemical Industries Ltd. | Cyclopropane carboxylic acids |
| JPS5793493U (en) * | 1980-11-28 | 1982-06-09 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1553818A (en) * | 1975-07-24 | 1979-10-10 | Nat Res Dev | Synthesis of cyclopropane carboxylic acids |
| NZ185635A (en) * | 1976-11-18 | 1980-04-28 | Ici Ltd | Preparation of 3-dihalovinyl-2,2-dimethylcyclopropane carboxylic acid derivatives |
-
1977
- 1977-07-20 GB GB30470/77A patent/GB1599888A/en not_active Expired
-
1978
- 1978-06-22 CA CA306,002A patent/CA1123004A/en not_active Expired
- 1978-07-11 BE BE1008978A patent/BE868901A/en not_active IP Right Cessation
- 1978-07-18 CH CH774278A patent/CH635064A5/en not_active IP Right Cessation
- 1978-07-18 IT IT25820/78A patent/IT1097870B/en active
- 1978-07-18 BR BR7804637A patent/BR7804637A/en unknown
- 1978-07-18 NL NL7807658A patent/NL7807658A/en not_active Application Discontinuation
- 1978-07-18 LU LU79993A patent/LU79993A1/en unknown
- 1978-07-18 IE IE1441/78A patent/IE47130B1/en not_active IP Right Cessation
- 1978-07-18 JP JP8682978A patent/JPS5422345A/en active Granted
- 1978-07-18 FR FR7821245A patent/FR2398042A1/en active Granted
- 1978-07-18 DE DE19782831555 patent/DE2831555A1/en active Granted
- 1978-07-18 DK DK321978A patent/DK158343C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK158343B (en) | 1990-05-07 |
| CA1123004A (en) | 1982-05-04 |
| IE47130B1 (en) | 1983-12-28 |
| FR2398042B1 (en) | 1983-04-29 |
| BR7804637A (en) | 1979-04-17 |
| FR2398042A1 (en) | 1979-02-16 |
| BE868901A (en) | 1979-01-11 |
| DK321978A (en) | 1979-01-21 |
| IT1097870B (en) | 1985-08-31 |
| CH635064A5 (en) | 1983-03-15 |
| DE2831555C2 (en) | 1987-09-10 |
| DE2831555A1 (en) | 1979-02-01 |
| GB1599888A (en) | 1981-10-07 |
| LU79993A1 (en) | 1979-04-09 |
| IT7825820A0 (en) | 1978-07-18 |
| JPS5422345A (en) | 1979-02-20 |
| NL7807658A (en) | 1979-01-23 |
| DK158343C (en) | 1990-10-01 |
| JPS6145612B2 (en) | 1986-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Patent lapsed |