MD282C2 - Method of obtaining a mixture of cypermethrin isomers in form of stabilized crystalline product - Google Patents

Method of obtaining a mixture of cypermethrin isomers in form of stabilized crystalline product

Info

Publication number
MD282C2
MD282C2 MD94-0329A MD940329A MD282C2 MD 282 C2 MD282 C2 MD 282C2 MD 940329 A MD940329 A MD 940329A MD 282 C2 MD282 C2 MD 282C2
Authority
MD
Moldova
Prior art keywords
isomers
mixture
couple
cypermethrin
obtaining
Prior art date
Application number
MD94-0329A
Other languages
Romanian (ro)
Russian (ru)
Other versions
MD282B1 (en
Inventor
Sandor Zoltan
Gyorgy Hidasi
Bela Bertok
Istvan Szekely
Janis Hajimichael
Sandor Botar
Lajos Nagy
Eva Somfai
Istvan Lak
Andras Rapi
Antal Gajary
Agnes Hegedus
Maria Tary
Original Assignee
Chinoin Gyogyszer -Es Vegyeszeti Termekek Gyara Rt.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from HU16789A external-priority patent/HU199390B/en
Priority claimed from PCT/HU1990/000006 external-priority patent/WO1990008132A1/en
Application filed by Chinoin Gyogyszer -Es Vegyeszeti Termekek Gyara Rt. filed Critical Chinoin Gyogyszer -Es Vegyeszeti Termekek Gyara Rt.
Publication of MD282B1 publication Critical patent/MD282B1/en
Publication of MD282C2 publication Critical patent/MD282C2/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention is related to a method of obtaining a mixture of cypermethrin isomers in form of stabilised crystalline product with the formula:in which carbon atoms in position 1,3 and a are chiral carbon atoms, waved line indicates a cys-or transconfiguration in relation with cyclopropane ring, the final mixture of isomers from 8 cypermethrin isomers, theoretically possible, containing, at least 95% or of the couple of isomers IR treans S and IS trans R (Ib) or of the mixture of couple of isomers IR cis S and IS cis R (Ia) and of couple of isomers (Ib) în relations (Ia):(Ib)= 55:45-25:75, obtained through the lop-sided transformation of degree II in the presence of an amine base and a dissolver from initial mixture of cypermethrin isomers, the mixture containing alike the couple of isomers (16) cys-and the other transisomers or couple of isomers Ia+Ib in one undesirable relation.
MD94-0329A 1989-01-17 1994-08-25 Method of obtaining a mixture of cypermethrin isomers in form of stabilized crystalline product MD282C2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
HU16789A HU199390B (en) 1989-01-17 1989-01-17 Process for producing mixture of cipermetrin's enantiomeres
SU904831010A RU2051886C1 (en) 1989-01-17 1990-01-17 Process for preparing mixture of cipermetrine isomers in form of stabilized crystalline product
PCT/HU1990/000006 WO1990008132A1 (en) 1989-01-17 1990-01-17 Process for the preparation of cypermethrine isomers

Publications (2)

Publication Number Publication Date
MD282B1 MD282B1 (en) 1995-09-30
MD282C2 true MD282C2 (en) 1996-01-31

Family

ID=26317171

Family Applications (1)

Application Number Title Priority Date Filing Date
MD94-0329A MD282C2 (en) 1989-01-17 1994-08-25 Method of obtaining a mixture of cypermethrin isomers in form of stabilized crystalline product

Country Status (1)

Country Link
MD (1) MD282C2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067461A1 (en) * 1981-05-26 1982-12-22 Shell Internationale Researchmaatschappij B.V. Preparation of cyanobenzyl cyclopropane carboxylates
EP0109113A1 (en) * 1982-11-11 1984-05-23 Shell Internationale Researchmaatschappij B.V. Process for preparing cyclopropane carboxylic acid ester derivatives
EP0208758A1 (en) * 1985-01-16 1987-01-21 Chinoin Gyogyszer Es Vegyeszet Pyrethroidal composition comprising more than one active ingredients.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067461A1 (en) * 1981-05-26 1982-12-22 Shell Internationale Researchmaatschappij B.V. Preparation of cyanobenzyl cyclopropane carboxylates
EP0109113A1 (en) * 1982-11-11 1984-05-23 Shell Internationale Researchmaatschappij B.V. Process for preparing cyclopropane carboxylic acid ester derivatives
EP0208758A1 (en) * 1985-01-16 1987-01-21 Chinoin Gyogyszer Es Vegyeszet Pyrethroidal composition comprising more than one active ingredients.
EP0215010A1 (en) * 1985-01-16 1987-03-25 Chinoin Gyogyszer Es Vegyeszet Insecticidal composition comprising more than one active ingredients.

Also Published As

Publication number Publication date
MD282B1 (en) 1995-09-30

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Legal Events

Date Code Title Description
FG4A Patent for invention issued
IF99 Valid patent on 19990615

Free format text: EXPIRES: 20090825

MM4A Patent for invention definitely lapsed due to non-payment of fees