MD245C2 - Method of preparation of ether of (S)-a-cyan-3-fenorybenzol cis-or trans-2,2 dimethyl-3R-(2,2)-dihalogenvenil cyclopropan-1R-carbonic acid - Google Patents
Method of preparation of ether of (S)-a-cyan-3-fenorybenzol cis-or trans-2,2 dimethyl-3R-(2,2)-dihalogenvenil cyclopropan-1R-carbonic acidInfo
- Publication number
- MD245C2 MD245C2 MD94-0277A MD940277A MD245C2 MD 245 C2 MD245 C2 MD 245C2 MD 940277 A MD940277 A MD 940277A MD 245 C2 MD245 C2 MD 245C2
- Authority
- MD
- Moldova
- Prior art keywords
- fenorybenzol
- cyclopropan
- cyan
- cis
- trans
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the method of preparation of optical isomer-(S)-)-α-cyan-3-fenorybenzol ether of cis or trans-2,2 dimethyl-3R-(2,2-dibrumvinil- or 2,2-dichlorvinil)-cyclopropan-1R-carbonic acid (chiralic A acid) that may be applied as ingredient for obtaining of insecticide preparations.The purpose of invention is increasing of yield of final product.The method foresees use as the initial ester, containing the remain [R] or [RS] configuration of α-cian-3-fenoxybenzol or the ester mixture at the nonequimolar quantities, concluding the remains of the alcohols of R-and S-configuration, and as organic solvent are acetonitril or alcanol C3-C4 or mixture with water at the quantity 0,5-5 volumes of solvents to the weight of initial ester and process is led in the presence the basic agent selected from group of hydroxidammonium, hydroxide of the alkali metal, quadric ammonium, as amire, acoholate, anionexchannnged resine in the quantity from catalytic up to 20% of initial ester weight at the temperature of 0-20°C.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7612094A FR2375161A1 (en) | 1976-04-23 | 1976-04-23 | PROCESS FOR TRANSFORMATION OF AN OPTICALLY ACTIVE A-CYANE SECONDARY ALCOHOL CHIRAL ACID ESTER OF STRUCTURE (R) INTO A-CYANE SECONDARY ALCOHOL CHIRAL ACID ESTER OF STRUCTURE (S) |
| SU772481551A SU990082A3 (en) | 1976-04-23 | 1977-04-22 | Process for preparing (s)-alpha-cyano-3-phenoxybenzene ester of cis- or trans-2,2-dimethyl-3r-(2,2-dihalovinyl)-cyclopropane-1-r-carboxylic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD245B1 MD245B1 (en) | 1995-07-31 |
| MD245C2 true MD245C2 (en) | 1995-12-31 |
Family
ID=26219418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MD94-0277A MD245C2 (en) | 1976-04-23 | 1994-09-08 | Method of preparation of ether of (S)-a-cyan-3-fenorybenzol cis-or trans-2,2 dimethyl-3R-(2,2)-dihalogenvenil cyclopropan-1R-carbonic acid |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD245C2 (en) |
-
1994
- 1994-09-08 MD MD94-0277A patent/MD245C2/en unknown
Non-Patent Citations (1)
| Title |
|---|
| Elliott M. Synthetic insecticide with a new oreles of activity. Nature, 248, 1974, p. 711 * |
Also Published As
| Publication number | Publication date |
|---|---|
| MD245B1 (en) | 1995-07-31 |
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|---|---|---|---|
| 1K4A | Payment of annual fees |