反应详情

To a solution of ethyl1-(aminomethyl)cyclopropane-1-carboxylate (Intermediate 114; 20.65 g, 50 mmol) in DCM (200 mL) was added cyclohexanone (Aldrich; 5.28 mL, 51 mmol). After stirring at room temperature for 15 minutes, sodium acetate (4.185 g, 75 mmol) was added, followed by sodium triacetoxyborohydride (15.905 g, 75 mmol). The suspension was stirred at room temperature for 2 days then partitioned between DCM and saturated aqueous sodium hydrogen carbonate solution. The organic solution was dried over sodium sulphate and evaporated to yield the title compound as a colourless oil (7.2 g, 64%).

1. stirringThe suspension was stirred at room temperature for 2 days
2. customthen partitioned between DCM and saturated aqueous sodium hydrogen carbonate solution
3. dry with materialThe organic solution was dried over sodium sulphate
4. customevaporated