反应详情

3.2 g of borane/tert-butylamine complex was added to 200 ml of diethyl ether solution containing 17.0 g (0.10 mol) of ethyl cyclohexanone-2-carboxylate and stirred overnight at room temperature. An aqueous diluted hydrochloric acid was added thereto to make it weakly acidic, which was then subjected to liquid-liquid separation. The organic layer thus separated was dried, concentrated and then distilled under reduced pressure to obtain 13.5 g of ethyl 2-hydroxycyclohexanecarboxylate. Yield: 78.5%. b.p. 68° to 71° C. (0.2 mmHg).

1. customwhich was then subjected to liquid-liquid separation
2. customThe organic layer thus separated
3. customwas dried
4. concentrationconcentrated
5. distillationdistilled under reduced pressure