反应详情

1-(4-Piperidinyl)-3,4-dihydrocarbostyril (0.8 g) is dissolved in dichloromethane (20 ml) and thereto is added phenylisocyanate (0.57 ml) and the mixture is stirred at room temperature for 4 hours. The solvent is concentrated and the residue is purified by silica gel column chromatography (solvent; n-hexane:ethyl acetate=5:1) and recrystallized from n-hexane/ethanol to give 1-(1-anilinocarbonyl-4-piperidinyl)-3,4-dihydrocarbostyril (0.8 g), as white powder, m.p. 194°-196° C.

1. concentrationThe solvent is concentrated
2. customthe residue is purified by silica gel column chromatography (solvent; n-hexane:ethyl acetate=5:1)
3. customrecrystallized from n-hexane/ethanol