反应详情

Retinoic acid (1.26 g, 0.0042 mol, Basf Co.), dicyclohexylcarbodiimide (DCC) (0.87 g, 0.0042 mol) and catalytic amount of dimethylaminopyridine (DMAP) were added to retinol (1.00 g, 0.0035 mol) dissolved in anhydrous dichloromethane (50 ml) at 0° C. The reaction solution was slowly warmed to room temperature and stirred for 12 hours under nitrogen atmosphere and under the condition for light and moisture to be intercepted. The reaction solution was filtered and the solvent was removed by distillation under reduced pressure. The residue was purified by column chromatography (silica gel 60 for cc part, Merk Co., mesh size 270–400, hexane/diethylether=19/1, v/v) to give 1.55 g (Yield 78%) of the pale yellow title compound.

1. filtrationThe reaction solution was filtered
2. customthe solvent was removed by distillation under reduced pressure
3. customThe residue was purified by column chromatography (silica gel 60 for cc part, Merk Co