Process for the preparation of salts of O-alkyl-O-phenyl- thiophosphoric acids and their secondary products

    公开(公告)号:DE3316180A1

    公开(公告)日:1984-11-08

    申请号:DE3316180

    申请日:1983-05-04

    Applicant: BASF AG

    Abstract: Salts of O-alkyl-O-phenylthiophosphoric acids (I) where X , X and X denote identical or different substituents, namely independently of one another hydrogen, methyl, halogen, trifluoromethyl, methylthio, nitro, cyano, phenoxy, phenylthio or 2,2-dihalovinyl, R represents methyl or ethyl and M represents an alkali metal, are obtained when corresponding O,O-dialkyl O-phenyl thiophosphates are reacted successively with a primary, secondary or tertiary amine and an appropriate alkali metal hydroxide in the presence of water. The process can also be used for the preparation of corresponding O-alkyl O-phenyl S-alkyl thiophosphates (IV) where Y represents an unbranched or branched alkyl radical having up to 4 carbon atoms or an unbranched or branched alkoxyalkyl group having up to 5 carbon atoms, when corresponding O,O-dialkyl O-phenyl thiophosphates are reacted successively with the amine, the alkali metal hydroxide and an appropriate haloalkane Y-Hal.

Patent Agency Ranking