Hydrochloric Acid → HCID 67871879, compound

Participants

Reaction Steps

A mixture of 6 parts of ethyl 4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]methyl]-1-piperidineacetate and 120 parts of a hydrochloric acid solution 6N was stirred and refluxed overnight. The reaction mixture was cooled and filtered. The filtrate was evaporated and the semi-solid residue was taken up in about 120 parts of 2-propanol. The solution was filtered and about 70 parts of 2,2'-oxybispropane were added to the filtrate. After stirring for 2 hours at room temperature, the precipitated product was filtered off, dried overnight in vacuo at 80° C. and pulverized in a mortar, yielding 3 parts (52%) of 4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]methyl]-1-piperidineacetic acid dihydrochloride. monohydrate; mp. 207.4° C. (457).

Provenance & Evidence