反应详情

A mixture of 15 parts of thionyl chloride, 4 parts of 4-[1-(4-fluorophenylmethyl)-1H-benzimidazol-2-ylamino]-1-piperidineethanol dihydrochloride and 375 parts of trichloromethane is stirred and refluxed overnight. The precipitated product is filtered off and dried, yielding 13 parts (83%) of N-[1-(2-chloroethyl)-4-piperidinyl]-1-(4-fluorophenylmethyl)-1H-benzimidazol-2-amine dihydrochloride; mp.>260° C.

1. temperaturerefluxed overnight
2. filtrationThe precipitated product is filtered off
3. customdried