反应详情

温度

120 °C

A mixture of tert-butyl 1-amino-2-methyl-1-thioxopropan-2-ylcarbamate (5.31 g, 24 mmol), 2-bromo-1,1-dimethoxyethane (CAN:7252-83-7, 5.11 g, 30 mmol) and TsOH (0.49 g, 3 mmol) in acetic acid (50 mL) was stirred at 120° C. for 4 h. After evaporation of solvents, the residue was diluted with ethyl acetate (50 mL) and water (50 mL). The water phase was washed with ethyl acetate (3×50 mL). Then water phase was lyophilized to give the title compound as brown solid (2.1 g, 65%); MS (LC/MS): 143.1 [M+H]+.

1. customAfter evaporation of solvents
2. additionthe residue was diluted with ethyl acetate (50 mL) and water (50 mL)
3. washThe water phase was washed with ethyl acetate (3×50 mL)