Hydrogen Bromide → HCID 178516028, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2.7 parts of 9-[(4-fluorophenyl)methyl]-8-[[1-[2-(4-methoxyphenyl)ethyl]-4-piperidinyl]-methyl]-9H-purin-6-ol and 75 parts of a hydrobromic acid solution 48% in water was stirred for 4 hours at 80° C. After evaporation, the residue was taken up in water and treated with sodium carbonate. The product was extracted with trichloromethane. The extract was dried, filtered and evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol, saturated with ammonia, (90:10 by volume) as eluent. The pure fractions were collected and the eluent was evaporated. The residue was crystallized from ethanol and acetonitrile. The product was filtered off and dried, yielding 1 part (38.6%) of 9-[(4-fluorophenyl)methyl]-8-[[1-[2-(4-hydroxyphenyl)ethyl]-4-piperidinyl]methyl]-9H-purin-6-ol; mp. 215.7° C. (compound 186).

Provenance & Evidence