AR247726A1 - Process for the preparation of cypermethrine isomers - Google Patents

Process for the preparation of cypermethrine isomers

Info

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
Application number
AR90316104A
Other languages
Spanish (es)
Original Assignee
Chinoin Gyogyszer Es Vegyeszet
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 Vegyeszet filed Critical Chinoin Gyogyszer Es Vegyeszet
Application granted granted Critical
Publication of AR247726A1 publication Critical patent/AR247726A1/en

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  • 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.

AR90316104A 1989-12-27 1990-02-07 Process for the preparation of cypermethrine isomers AR247726A1 (en)

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)

* Cited by examiner, † Cited by third party
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

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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