Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-06-12
1976-08-03
Rotman, Alan L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260250B, 260251P, 260297P, 260973, C07D21344
Patent
active
039728870
ABSTRACT:
Quaternary ammonium salts are novel catalysts in the process of reacting an alkali metal phenate, pyridinate or pyrimidinate with an O,O-dialkyl phosphorochloridothioate or O-alkyl phenylphosphonochloridothioate to produce the corresponding phosphorothioates and phenylphosphonothioates. The process is conducted under alkaline conditions in a liquid reaction medium. As an example, O,O-diethyl O-(3,5,6-trichloro-2-pyridyl)-phosphorothioate is prepared in excellent yields and purity by reacting solid particulate sodium 3,5,6-trichloropyridinate with O,O-diethyl phosphorochloridothioate dissolved in a stirred methylene chloride reaction medium in the presence of a catalytic amount of benzyltriethylammonium chloride.
REFERENCES:
Chem. Abstracts, Seventh Collective Index, Subjects A-Amm, p. 1533S.
Starks, J.P.C.S., vol. 93 (1), pp. 195-199, (1971).
Starks et al., J.A.C.S., vol. 95 (11), pp. 3613-3617, (1973).
Hennis et al., I & E.C., Product Research & Development, vol. 6 (3), pp. 193-195, (1967).
Hennis et al., I & E.C., Product Research, vol. 7 (2), pp. 96-101, (1968).
Rotman Alan L.
The Dow Chemical Company
White L. Wayne
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