反应详情

To a suspension of 4-thiocarbamoyl-piperazine-1-carboxylic acid tert-butyl ester (13.3 mmol) in ethanol (60 ml) was added 4-(2-bromoacetyl)-benzoic acid (13.3 mmol) and 4-methylmorpholine (13.9 mmol). The reaction was heated at reflux for 2.5 h. The reaction was concentrated in vacuo and the solid washed with water (200 ml) to yield the title compound as a white solid (3.9 g). 1H NMR (400 MHz, CDCl3) 1.45 (9H, s), 3.58 (8H, m), 4.86 (1H, s), 6.95 (1H,s), 7.97 (2H, d, J 8 Hz), 8.1 (2H, d, J 8 Hz).

1. temperatureThe reaction was heated
2. temperatureat reflux for 2.5 h
3. concentrationThe reaction was concentrated in vacuo
4. washthe solid washed with water (200 ml)