Process for preparing alkyl or aryl thiophosphorus halides and m

Details Process for preparing alkyl or aryl thiophosphorus halides and m Process for preparing alkyl or aryl thiophosphorus halides and m

1977-02-04

1979-01-09

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07H 934, C07H 942

Patent

active

041338308

ABSTRACT:
Improved yields and a lower accumulation of by-product is obtained in the method for preparing compounds of the formula: ##STR1## wherein R is a C.sub.1 to C.sub.20 alkyl radical, cycloalkyl of 5-6 carbon atoms in the ring and the C.sub.1 -C.sub.4 alkyl substituted derivative thereof, an aralkyl radical of up to two fused rings, the alkyl portion having from 1 to 20 carbon atoms, an aryl radical of up to three fused rings and the C.sub.1 -C.sub.4 alkyl derivatives thereof, and biphenyl and the C.sub.1 -C.sub.4 alkyl derivatives thereof, X is a halogen of chlorine or bromine, and Z is either R or X, by the reaction of a phosphorus halide source, a hydrocarbon source selected from the group consisting of RH, RX and RSaR, wherein a is 1 or 2 and a sulfur source under autogenous pressure in an autoclave at a temperature ranging from about 175.degree. C. to about 450.degree. C. by recycling to successive runs a by-product of the reaction remaining after separation of the RP(S)XZ product fraction selected from the group consisting of:

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patent: 4034024 (1977-07-01), Toy et al.

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