反应详情

2-Bromo-4-methylacetophenone (572 mg, 2.68 mmol) was added to a solution of piperazine-1-carboxylic acid tert-butyl ester (500 mg, 2.68 mmol) in dichloromethane (5 ml) and triethylamine (0.45 ml, 3.22 mmol). The mixture was stirred for 3 days at room temperature and solvents were removed in vacuo. The residue was purified by flash chromatography on silica gel (eluant; 40% hexane:60% EtOAc) to yield the title compound (661 mg, 77%).

1. customsolvents were removed in vacuo
2. customThe residue was purified by flash chromatography on silica gel (eluant; 40% hexane:60% EtOAc)