C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
260/259, 260/268
C07F 9/12 (2006.01) C07F 9/18 (2006.01) C07F 9/58 (2006.01)
Patent
CA 1304743
Abstract Certain phenyl and N-heterocyclic phosphoro- thioates and phosphonothioates and phosphates are pre- pared by the reaction of an appropriate alkali metal or alkaline earth metal -0-phenyl or N-heterocyclic compound with an appropriate phosphorochloridate, phosphorochloridothioate, phosphonochloridate or phosphonochloridothioate under alkaline conditions in the presence of a tertiary amine catalyst and a nonionic surfactant having an HLB Value of from 1 to 20, preferably 5 to 15, in a two-phase system, one phase being primarily the phosphorate or phosphonate reactant and a complex thereof with the tertiary amine catalyst and the other phase being an aqueous reaction medium comprising water, a buffer system, and the alkali metal or alkaline earth metal-0-phenyl or -0-N- heterocyclic compound, in the substantial or complete absence of an organic solvent the aqueous reaction medium being maintained at pH 10 to 12 by the buffer system. 34,382A-F
547182
Smart & Biggar
The Dow Chemical Company
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