反应详情

(±)-3-Cyclohexene-1-carboxylic acid (50 g) was dissolved in N,N-dimethylformamide (550 ml), and triethylamine (170 ml) and benzyl bromide (61 ml) were added under ice cooling to stir the mixture at room temperature for 12 hours. Water was added, extraction was conducted with ethyl acetate, and the resultant organic layer was washed with saturated aqueous solution of sodium chloride and then dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the residue was purified by column chromatography on silica gel (hexane:ethyl acetate=3:1) to obtain the title compound (70.8 g).

1. extractionextraction
2. washthe resultant organic layer was washed with saturated aqueous solution of sodium chloride
3. dry with materialdried over anhydrous magnesium sulfate
4. distillationThe solvent was distilled off under reduced pressure
5. customthe residue was purified by column chromatography on silica gel (hexane:ethyl acetate=3:1)