Process for preparing phosphorodichloridothiolate
AssigneeStauffer Chemical Company
InventorDanielle A. Bright
Life of this patent
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Abstract
S-substituted phosphorodichloridothiolates such as S-alkyl, cycloalkyl, aralkyl, and arylphosphorodichloridothiolates are prepared by reacting a sulfuryl chloride and a mercaptan or disulfide with phosphorus trichloride and a carboxylic acid anhydride.
Claims15
A process for preparing S-substituted phosphorodichloridothiolate of the formula:
- ##STR6## wherein R is (a) a (C.sub.1 -C.sub.10) alkyl, preferably a (C.sub.1 -C.sub.7) alkyl, most preferably a (C.sub.1 -C.sub.4) alkyl group, optionally substituted with a (C.sub.1 -C.sub.4) alkoxy group, preferably a methoxy or ethoxy group;
- a (C.sub.1 -C.sub.4) alkylthio group, preferably a methylthio or ethylthio group;
- or a halogen atom, preferably a chlorine atom;
- (b) a (C.sub.3 -C.sub.4) cycloalkyl group, preferably a cyclohexyl group;
- (c) a (C.sub.7 -C.sub.10) aralkyl, preferably benzyl or phenethyl group, optionally substituted with up to three (C.sub.1 -C.sub.2) alkyl groups, preferably methyl groups;
- (C.sub.1 -C.sub.2) alkoxy groups, preferably methoxy groups;
- halogen atoms, preferably chlorine atoms;
- or nitro groups;
- or
- (d) a (C.sub.4 -C.sub.10) aryl, preferably phenyl group, optionally substituted with up to three (C.sub.1 -C.sub.5) alkyl groups, preferably methyl groups;
- (C.sub.1 -C.sub.5) alkoxy groups, preferably methoxy groups;
- halogen atoms, preferably chlorine atoms;
- or nitro groups,
- which comprises reacting a chlorinating agent with a second reactant selected from a mercaptan of the formula RSH and a disulfide of the formula RSSR, wherein R is as previously stated, and with phosphorus trichloride and carboxylic acid anhydride at a temperature sufficient to produce the phosphorodichloridothiolate product.
A process for preparing S-substituted phosphorodichloridothiolates comprising recting a sulfenyl chloride with phosphorus trichloride and a carboxylic acid anhydride.
A process for preparing S-substituted phosphorodichloridothiolates comprising reacting a chlorinating agent and a second reactant selected from a mercaptan of the formula RSH and a disulfide of the formula RSSR, wherein R is an alkyl, aralkyl or substituted cycloalkyl or aryl or substituted aryl, with a phosphorus trichloride and a carboxylic acid anhydride.
A process for preparing S-substituted phosphorodichloridothiolate of the formula:
- ##STR10## wherein R is (a) a (C.sub.1 -C.sub.10) alkyl, preferably a (C.sub.1 -C.sub.7) alkyl, most preferably a (C.sub.1 -C.sub.4) alkyl group, optionally substituted with a (C.sub.1 -C.sub.4) alkoxy group, preferably a methoxy or ethoxy group;
- a (C.sub.1 -C.sub.4) alkylthio group, preferably a methylthio or ethylthio group;
- or a halogen atom, preferably a chlorine atom;
- (b) a (C.sub.3 -C.sub.4) cycloalkyl group, preferably a cyclohexyl group;
- (c) a (C.sub.7 -C.sub.10) aralkyl, preferably benzyl or phenethyl group, optionally substituted with up to three (C.sub.1 -C.sub.2) alkyl groups, preferably methyl groups;
- (C.sub.1 -C.sub.2) alkoxy groups, preferably methoxy groups;
- halogen atoms, preferably chlorine atoms;
- or nitro groups;
- or
- (d) a (C.sub.4 -C.sub.10) aryl, preferably phenyl group, optionally substituted with up to three (C.sub.1 -C.sub.5) alkyl groups, preferably methyl groups;
- (C.sub.1 -C.sub.5) alkoxy groups, preferably methoxy groups;
- halogen atoms, preferably chlorine atoms;
- or nitro groups,
- which comprises reacting a sulfenyl chloride with phosphorus trichloride and a carboxylic acid anhydride at a temperature sufficient to produce the phosphorodichloridothiolate product.
Dependencies are inferred from the claim text.