Hydrogen Bromide → HCID 14518010, compound

Participants

Reaction Steps

A mixture of 4.95 parts of 4-[[1-[(4-fluorophenyl)methyl]-1H-benzimidazol-2-yl]thio]-1-[(4-methylphenyl)sulfonyl]piperidine, 225 parts of a hydrobromic acid solution 48% in water and 5 parts of phenol was stirred and refluxed for 2 hours. The reaction mixture was evaporated and the residue as taken up in water and treated with a sodium hydroxide solution. The product was extracted with dichloromethane. The extract was dried, filtered and evaporated. The residue was purified by filtration over silica gel using a mixture of trichloromethane and methanol, saturated with ammonia (95:5 by volume) as eluent. The pure fractions were collected and the eluent was evaporated, yielding 3.4 parts (99%) of 1-[(4-fluorophenyl)methyl]-2-[(4-piperidinyl)thio]-1H-benzimidazole (55).

Provenance & Evidence