Title: Preparation of O-alkyls, S-dialkylphosphorodithioates
Application Number: 87100525 Application Date: 1987.01.27
Publication Number: 1012896 Publication Date: 1987.08.26
Approval Pub. Date: 1993.03.03 Granted Pub. Date: 1993.03.03
International Classifi-cation: C07F9/17
Applicant(s) Name: Rhone-Poulenc Agrochimie Address:
Inventor(s) Name: Iean-Michel Brochard
Attorney & Agent: XU ZHIQI
Abstract:
    The O-alkyl S,S-dialkylphosphorodithioates, e.g. ethoprophos, are facilely prepared, in improved yields and having great purity, by reacting an alkylphosphate dihalogenide, e.g. a dichloride, with a 1.5 to 8 mol excess of a thiol, in the presence of a 0.2 to 4 mol excess of an acid acceptor, with both molar excesses being per mole of said dihalogenide.
Time: 4