Process for preparing alkyl or aryl phosphorus halides and mixed

Details Process for preparing alkyl or aryl phosphorus halides and mixed Process for preparing alkyl or aryl phosphorus halides and mixed

1979-01-04

1980-05-20

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 457P, 260 457PS, C07F 942

Patent

active

RE0302791

ABSTRACT:
Alkyl or aryl phosphonic or phosphonothioic dihalides and phosphinic or phosphinothioic monohalides are prepared by reacting an alkyl halide or aryl halide respectively with a tri-valent phosphorus compound having at least two halogens attached thereto, and preferably three two halogens such as phosphorus trihalide, in the presence of P.sub.4 O.sub.10 or P.sub.4 S.sub.10 under at least autogenous pressure at a temperature of from 200.degree. C. to 450.degree. C. The compounds obtained are useful as constituents in insecticides, fungicides, pharmaceuticals, and as intermediates in preparation of other organophosphorus compounds.

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Ethyl Corp., Development Products Bulletin, Feb. 1969.
Richard et al., "J.A.C.S.", vol. 83 (1961), pp. 1722-1726.
Kosolapoff, "Organo Phos. Comps.", pp. 152, 162 (1950).
Sommer, "Zeit Anorg. Alleg. Chem.", 1970, 376(1), pp. 37-43.

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