MD466G2 - Process for preparation of cypermethrine isomers mixtures - Google Patents

Process for preparation of cypermethrine isomers mixtures

Info

Publication number
MD466G2
MD466G2 MD94-0336A MD940336A MD466G2 MD 466 G2 MD466 G2 MD 466G2 MD 940336 A MD940336 A MD 940336A MD 466 G2 MD466 G2 MD 466G2
Authority
MD
Moldova
Prior art keywords
isomers
cis
trans
preparation
cypermetrine
Prior art date
Application number
MD94-0336A
Other languages
Romanian (ro)
Russian (ru)
Other versions
MD466F1 (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
Application filed by Chinoin Gyogyszer -Es Vegyeszeti Termekek Gyara Rt. filed Critical Chinoin Gyogyszer -Es Vegyeszeti Termekek Gyara Rt.
Priority claimed from PCT/HU1990/000006 external-priority patent/WO1990008132A1/en
Publication of MD466F1 publication Critical patent/MD466F1/en
Publication of MD466G2 publication Critical patent/MD466G2/en

Links

Abstract

The invention relates to the process for preparation of cypermetrine isomers mixtures of formula Iwherein 1,3, and α-marked carbon atoms refer to chiralic carbon atom, and waved line indicates to cis or trans configuration relative to cyclopropane nucleus, which contains at least 95% of isomer pairs: IR trans S and IS trans R (Ib) or only IR cis S and IS cis R (Ia) mixture and the (Ib) isomer pair in the ratio of (Ia):(Ib)=55:45 - 25:75, obtained by type 2 asimmetric transformations, in the pressence of an amine base and protonic solvent between O°C and +25°C from the starting cypermetrine isomers mixture, having at least 90% wt % purity, containing and other cis or trans isomers, following after (Ib) pair of isomers or Ia+Ib pairs of isomers in undesired ratio.The process is carried out continuously in several conse cutive reactors. The cristals are formed at the end of reactors chain, which optional are separated from crystalls suspension.
MD94-0336A 1989-12-27 1990-01-17 Process for preparation of cypermethrine isomers mixtures MD466G2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU678089A HU210098B (en) 1989-12-27 1989-12-27 Process for producing isomeric mixtures of cypermethrin and stabilised insecticidal compositions and concentrates containing the mixtures
PCT/HU1990/000006 WO1990008132A1 (en) 1989-01-17 1990-01-17 Process for the preparation of cypermethrine isomers

Publications (2)

Publication Number Publication Date
MD466F1 MD466F1 (en) 1996-09-30
MD466G2 true MD466G2 (en) 1997-04-30

Family

ID=10972006

Family Applications (1)

Application Number Title Priority Date Filing Date
MD94-0336A MD466G2 (en) 1989-12-27 1990-01-17 Process for preparation of cypermethrine isomers mixtures

Country Status (6)

Country Link
AR (1) AR247726A1 (en)
HU (1) HU210098B (en)
LV (1) LV10232B (en)
MD (1) MD466G2 (en)
RU (1) RU2045516C1 (en)
TR (1) TR25674A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0205010A2 (en) * 1985-06-14 1986-12-17 International Business Machines Corporation Multiple port communications adapter apparatus
EP0208758A1 (en) * 1985-01-16 1987-01-21 Chinoin Gyogyszer Es Vegyeszet Pyrethroidal composition comprising more than one active ingredients.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208758A1 (en) * 1985-01-16 1987-01-21 Chinoin Gyogyszer Es Vegyeszet Pyrethroidal composition comprising more than one active ingredients.
EP0205010A2 (en) * 1985-06-14 1986-12-17 International Business Machines Corporation Multiple port communications adapter apparatus

Also Published As

Publication number Publication date
HU896780D0 (en) 1990-03-28
AR247726A1 (en) 1995-03-31
HU210098B (en) 1995-02-28
RU2045516C1 (en) 1995-10-10
TR25674A (en) 1993-07-01
LV10232B (en) 1995-04-20
LV10232A (en) 1994-10-20
HUT55746A (en) 1991-06-28
MD466F1 (en) 1996-09-30

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Legal Events

Date Code Title Description
FG3A Granted patent for invention
IF99 Valid patent on 19990615

Free format text: EXPIRES: 20140825