Thionyl Chloride → HCID 20506344, compound

Participants

Reaction Steps

To a stirred mixture of 50 parts of 6-chloro-2-cyclohexyl-1H-benzimidazole-1-propanol in 375 parts of trichloromethane are added dropwise 60 parts of sulfinyl chloride (exothermic reaction). Upon completion, stirring is continued for 2 hours at reflux temperature. The reaction mixture is evaporated and the semi-solid residue is dissolved in hot water. The solution is stirred with activated charcoal. The latter is filtered hot over hyflo and the filtrate is stirred in an ice-bath. The precipitated product is filtered off and dried, yielding 6-chloro-1-(3-chloropropyl)-2-cyclohexyl-1H-benzimidazole hydrochloride; mp. 227.5° C.

Provenance & Evidence