HCID 19031208, compound → HCID 14969526, compound

Participants

Reaction Steps

1-[1-(4-Benzyloxybenzoyl)-4-piperidinyl]-3,4-dihyrocarbostyril (4.76 g) is dissolved in methanol (100 ml) and thereto is added 5% palladium-carbon (1 g). The mixture is stirred at room temperature under 1 atm. under hydrogen atmosphere. After the completion of the reaction, the catalyst is filetered off and the filtrate is concentrated. The resultant is purified by silica gel column chromatography (solvent; n-hexane:ethyl acetate=1:1) and further recrystallized from n-hexane/ethanol to give 1-[1-(4-hydroxybenzoyl)-4-piperidinyl]-3,4-dihydrocarbostyril (2.5 g) as white powder, m.p. 182°-183° C.

Provenance & Evidence