反应详情

To a stirred solution of 2,2-dimethylbut-3-ynoic acid (87.7 g, 0.782 mmol) and benzyl alcohol (114.6 g, 0.938 mol) in dichloromethane (800 mL) was added DCC (193.5 g, 0.938 mmol) at −20° C. The reaction mixture was stirred at room temperature overnight and then the solvent was evaporated in vacuo. The residue was purified by chromatography on silica gel (2% ethyl acetate in petroleum ether as eluant) to afford benzyl 2,2-dimethylbut-3-ynoate (100 g, 59% yield). 1H NMR (CDCl3, 400 MHz) δ 7.37-7.36 (m, 5H), 5.19 (s, 2H), 2.28 (s, 1H), 1.52 (s, 6H).

1. customthe solvent was evaporated in vacuo
2. customThe residue was purified by chromatography on silica gel (2% ethyl acetate in petroleum ether as eluant)