PROCESSO PARA A PREPARACAO DE HALOGENETOS DE DIESTER DE ACIDO DITIOFOSFORICO

PROCESSO PARA A PREPARACAO DE HALOGENETOS DE DIESTER DE ACIDO DITIOFOSFORICO

A process for the preparation of a dithiophosphoric acid diester halide of the formula IN WHICH R1 and R2 each independently is alkyl with 1 to 5 carbon atoms, and Hal is halogen, comprising reacting an S-alkyl dihalide of the formula WITH AN ALCOHOL OF THE FORMULA R2OH at a temperature of about -5...

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Bibliographische Detailangaben
1. Verfasser: AROLD H
Format: Patent
Sprache:por
Schlagworte:
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A process for the preparation of a dithiophosphoric acid diester halide of the formula IN WHICH R1 and R2 each independently is alkyl with 1 to 5 carbon atoms, and Hal is halogen, comprising reacting an S-alkyl dihalide of the formula WITH AN ALCOHOL OF THE FORMULA R2OH at a temperature of about -5 DEG to -90 DEG C in the presence of about a 5 to 200% molar excess of potassium hydroxide. Advantageously about a 10 to 600% molar excess of alcohol is employed, R1 is n-propyl, R2 is ethyl, Hal is chlorine, and the reaction is effected in an aliphatic or aromatic optionally chlorinated hydrocarbon or an ether.