MD466G2 - Process for preparation of cypermethrine isomers mixtures - Google Patents
Process for preparation of cypermethrine isomers mixturesInfo
- 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
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.
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)
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. |
-
1989
- 1989-12-27 HU HU678089A patent/HU210098B/en not_active IP Right Cessation
-
1990
- 1990-01-17 MD MD94-0336A patent/MD466G2/en active IP Right Grant
- 1990-01-17 RU SU905010694A patent/RU2045516C1/en not_active IP Right Cessation
- 1990-02-07 AR AR90316104A patent/AR247726A1/en active
- 1990-02-28 TR TR20790A patent/TR25674A/en unknown
-
1993
- 1993-06-15 LV LVP-93-586A patent/LV10232B/en unknown
Patent Citations (2)
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 |