Process for the production of an N-acyl derivative of O,S-dialky

Details Process for the production of an N-acyl derivative of O,S-dialky Process for the production of an N-acyl derivative of O,S-dialky

1998-08-31

1999-10-26

Ambrose, Michael G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

558178, C07F 924

Patent

active

059731800

ABSTRACT:
The present invention relates to an improved process for the preparation of an acyl derivative of O,S-dialkyl phosphoroamidothioate by reacting an O,S-dialkyl phosphoroamidothioate with an acylating agent in the presence of an acid, wherein the improvement resides in adding a C.sub.4 to C.sub.8 aliphatic alcohol, following completion of the acylation reaction, to the mixture of the N-acyl-O,S-dialkyl phosphoroamidothioate, the acylating agent and the acid. In an embodiment of the present invention, the acylation reaction is conducted in the absence of a solvent. The aliphatic alcohol is easily recovered and can be reused in a subsequent acylation reaction.

REFERENCES:
patent: 3716600 (1973-02-01), Magee
patent: 3732344 (1973-05-01), Platt, Jr.

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