Title: Process for preparing methyl ester of O,O-dimethyl-dithiophosphoryl acetic acid

Abstract: The methyl ester of O,O-dimethyl-dithiophosphoryl acetic acid is prepared with minimal formation of by-products by reacting the sodium salt of O,O-dimethyl-dithiophosphoryl acid with the methyl ester of 2-chloroacetic acid at a pH of 5.5 to 7, at relatively high temperatures, of the order of 80.degree. to 100.degree. C, for reaction times of 10 to 15 minutes. The process can be carried out continuously.

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Inventors: Bornengo, Mario (Mestre, IT)
Grego, Saverio (Mestre, IT)

Application Number: 560201
Filing Date: 1975-03-20
Publication_date: 1976-12-14
Assignee: Montedison Fibre S.p.A. (Milan, IT)
Primary Class(es): 558/107 987/209
Other Classes:
US Patent Ref:

2358133	Sep, 1944	Stoesser et al.	260/990.
3047459	Jul, 1962	Perini et al.	260/979.
3591666	Jul, 1971	Pellegrini et al.	260/990.

Other Refs:
Primary Examiner: Sutto, Anton H.
Assistant Examiner:
Attorney: