| 摘要 |
An improved process for preparing a phosphorodichlorothioate of the formula <IMAGE> wherein R is: a C1-C10 alkyl group, optionally substituted with a C1-C4 alkoxy group, a C1-C4 Alkylthio group, or a halogen group; a C3-C6 cycoalkyl group; a C7-C10 araklyl group, optionally substituted with up to three C1-C5 alkyl groups, C1-C4 alkoxy groups, halogen groups or nitro groups, C6-C10 aryl group, optionally substituted with up to three C3-C5 alkyl groups, C1-C4 alkoxy groups, halogen groups or nitro groups; which comprises reacting, at a temperature of from about -20 DEG C. to about 20 DEG C., a mercaptan of the formula R-SH, wherein R is as previously defined, with at least one chlorinating agent, sulfur based acid and phosphorus trichloride. The compounds produced by this process are useful as intermediates in the preparation of O,S-disubstituted phosphorodichloridothiolates, which are, in turn, useful in the preparation of organophosphorus pesticides.
|
