反应详情

To the solution of 1.9 g of 2-methyl-1,3,4,14b-tetrahydro-10H-pyrazino[1,2-a]pyrrolo[2,1-c][1,4]-benzodiazepine in 50 ml of benzene, 2.14 g of ethyl chloroformate are added and the mixture is refluxed for 3 days. It is diluted with diethyl ether, washed with N hydrochloric acid and with both saturated aqueous sodium chloride and sodium bicarbonate, dried and evaporated, to yield the 2-carbethoxy-1,3,4,14b-tetrahydro-10H-pyrazino[1,2-a]pyrrolo[2,1-c][1,4]-benzodiazepine showing in the NMR-spectrum peaks at 8.55(t), 6.60(m), 5.65(q) and 3.90(d) ppm, and in the mass-spectrum a molecular ion of 311.

1. temperaturethe mixture is refluxed for 3 days
2. washwashed with N hydrochloric acid and with both saturated aqueous sodium chloride and sodium bicarbonate
3. customdried
4. customevaporated