AR247726A1 - Process for the preparation of cypermethrine isomers - Google Patents
Process for the preparation of cypermethrine isomersInfo
- Publication number
- AR247726A1 AR247726A1 AR90316104A AR31610490A AR247726A1 AR 247726 A1 AR247726 A1 AR 247726A1 AR 90316104 A AR90316104 A AR 90316104A AR 31610490 A AR31610490 A AR 31610490A AR 247726 A1 AR247726 A1 AR 247726A1
- Authority
- AR
- Argentina
- Prior art keywords
- isomers
- pair
- mixture
- diazabiciclo
- series
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Thiazole And Isothizaole Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
PROCEDIMIENTO PARA OBTENER MEZCLAS DE ISOMEROS DE LA CIPERMETRINA DE FORMULA (I), EN LA QUE LOS ATOMOS DE CARBONO DE LAS POSICIONES 1 Y 3 Y ALFA SON QUIRALES, MEZCLAS QUE CONTIENEN POR LO MENOS UN 95% DE UNA MEZCLA DE 1RCISS Y 1SCISR (IA) Y DEL PAR DE ISOMEROS (IB), CON UNA PROPORCION DE (IA):(IB) COMPRENDIDA ENTRE 55:45 Y 25:75, POR TRANSFORMACION ASIMETRICA DE SEGUNDO ORDEN, A PARTIR DE UNA MEZCLA INICIAL DE ISOMEROS DE CIPERMETRINA QUE, JUNTO CON EL PAR DE ISOMEROS (IB) CONTIENE ISOMEROS CIS U OTROS, ISOMEROS TRANS, O EL PAR DE ISOMEROS (IA)+(IB) EN PROPORCION NO DESEADA, DONDE: A) SE HACE REACCIONAR UNA MEZCLA DE ISOMEROS DE FORMULA (I), ACEITOSA O CRISTALINA, AL 90%, QUE CONTIENE POR LO MENOS UN 60% DE ISOMEROS TRANS, CON TRIETILAMINA O 1, 5-DIAZABICICLO (4.3.0)NON-5-ENO (DBN) O 1, 5- DIAZABICICLO (5.4.0) UNDECENO (DBU), CON AGITACION FUERTE, EN PRESENCIA DE PROPANOL Y SE HACE PRECIPITAR EVENTUALMENTE EL PRODUCTO CRISTALINO POR ENFRIAMIENTO GRADUAL; B) TERMINADA LA TRANSFORMAC ION ASIMETRICA, SE AISLA LA MASA CRISTALINA Y SE RECRISTALIZA; C) DURANTE EL PROCESAMIENTO SE AGREGA UN ALDEHIDO PARA FIJAR EL GRUPO CIANO, Y, EVENTUALMENTE, D) LA SERIE DE OPERACIONES SE REALIZA DE MODO CONTINUO EN VARIOS REACTORES DISPUESTOS EN CADENA, CONECTANDO EN SERIE DE 2 A 10 REACTORES PROVISTO DE ENFRIADOR, MEZCLADOR Y CALEFACTOR.PROCEDURE FOR OBTAINING MIXTURES OF ISOMERS OF CYMPERMETRINE OF FORMULA (I), IN WHICH THE CARBON ATOMES OF POSITIONS 1 AND 3 AND ALPHA ARE CHIRAL, MIXTURES CONTAINING AT LEAST 95% OF A MIXTURE OF 1RCISS AND 1SCISR ( IA) AND OF THE PAIR OF ISOMERS (IB), WITH A PROPORTION OF (IA) :( IB) COMPRISED BETWEEN 55:45 AND 25:75, BY ASYMMETRICAL TRANSFORMATION OF SECOND ORDER, FROM AN INITIAL MIXTURE OF CYBERMETRINE ISOMERS THAT , TOGETHER WITH THE PAIR OF ISOMERS (IB) CONTAINS CIS OR OTHER ISOMERS, TRANS ISOMERS, OR THE PAIR OF ISOMERS (IA) + (IB) IN UNWANTED PROPORTION, WHERE: A MIXTURE OF ISOMERS OF FORMULA IS REACTED ( I), OIL OR CRYSTALLINE, 90%, CONTAINING AT LEAST 60% OF TRANS ISOMERS, WITH TRIETILAMINE OR 1,5-DIAZABICICLO (4.3.0) NON-5-ENO (DBN) OR 1, 5- DIAZABICICLO (5.4.0) UNDECENO (DBU), WITH STRONG AGITATION, IN THE PRESENCE OF PROPANOL AND THE CRYSTALLINE PRODUCT IS EVENTUALLY PRECIPITATED BY GRADUAL COOLING; B) THE ASYMMETRIC TRANSFORMATION IS COMPLETED, THE CRYSTAL MASS IS ISOLATED AND RECRISTALIZED; C) DURING THE PROCESSING, AN ALDEHYDE IS ADDED TO FIX THE CIANO GROUP, AND, EVENTUALLY, D) THE SERIES OF OPERATIONS ARE CONTINUOUSLY CONDUCTED IN SEVERAL REACTORS DISPOSED IN A CHAIN, CONNECTING IN SERIES FROM 2 TO 10 REACTORS PROVIDED WITH A COOLER, MIXER AND HEATER.
Applications Claiming Priority (1)
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
AR247726A1 true AR247726A1 (en) | 1995-03-31 |
Family
ID=10972006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AR90316104A AR247726A1 (en) | 1989-12-27 | 1990-02-07 | Process for the preparation of cypermethrine isomers |
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) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1275108A (en) * | 1985-01-16 | 1990-10-09 | Laszlo Pap | Insecticidal composition comprising more than one active ingredients |
US4751634A (en) * | 1985-06-14 | 1988-06-14 | International Business Machines Corporation | Multiple port communications adapter apparatus |
-
1989
- 1989-12-27 HU HU678089A patent/HU210098B/en not_active IP Right Cessation
-
1990
- 1990-01-17 RU SU905010694A patent/RU2045516C1/en not_active IP Right Cessation
- 1990-01-17 MD MD94-0336A patent/MD466G2/en active IP Right Grant
- 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
Also Published As
Publication number | Publication date |
---|---|
HU896780D0 (en) | 1990-03-28 |
MD466F1 (en) | 1996-09-30 |
HU210098B (en) | 1995-02-28 |
LV10232B (en) | 1995-04-20 |
HUT55746A (en) | 1991-06-28 |
LV10232A (en) | 1994-10-20 |
RU2045516C1 (en) | 1995-10-10 |
TR25674A (en) | 1993-07-01 |
MD466G2 (en) | 1997-04-30 |
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