Sodium Hydroxide → 3-(3,4-Dichlorophenyl)-4-[2-(3,5-dimethylbenzoyl)imidazol-1-yl]butan-1-ol

Participants

Reaction Steps

3-(3,4-Dichlorophenyl)-4-[2-(3,5-dimethylbenzoyl)imidazol-1-yl]butyl 3,5-dimethylbenzoate (0.93 g) (see Preparation 31) was dissolved in methanol (10 ml) and 2N aqueous sodium hydroxide solution (2 ml) added. A thick gum formed, additional methanol was added (50 ml) and the resulting suspension stirred at room temperature overnight. The methanol was then removed under reduced pressure and the residue partitioned between dichloromethane (50 ml) and water (10 ml). The organic phase was separated, washed with brine and the solvent removed under reduced pressure to give the crude product which was chromatographed on silica gel eluting with a solvent gradient of 99:1 changing to 95:5, by volume, dichloromethane:methanol, to give 3-(3,4-dichlorophenyl)-4-[2-(3,5-dimethylbenzoyl)imidazol-1-yl]butan-1-ol (0.67 g) as a white foam.

Provenance & Evidence