FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing alkaline salts of O,O-dialkyl-dithiophosphoric acid of general formula: (RO)2P(S)SM, where R=alkyl and C1-C4, M=Na, K can be used in organic synthesis. The disclosed method involves reaction of O,O-dialkyl-dithiophosphoric acid of general formula: (RO)2P(S)SH, where R=C1-C4 alkyl with triethylamine in benzene in molar ratio dialkyl-dithiophosphoric acid : triethylamine = 1:1, and the formed triethylammonium salt of O,O-dialkyl-dithiophosphoric acid reacts with solid alkali MOH, where M=Na, K in molar ratio triethylammonium salt of dialkyl-dithiophosphoric acid : solid alkali = 1:1, with azeotropic separation of the reaction water, after which the formed salt is separated.
EFFECT: novel method for synthesis of alkaline salts of O,O-dialkyl-dithiophosphoric acid while ensuring high output of the product and preventing hydrolytic isomerisation thereof.
1 cl, 2 ex
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