反应详情

The product of Example 33 (0.53 gram) was dissolved in 150 ml of ethanol, and 1.5 ml of 2.3N ethanolic hydrogen chloride. The solution was concentrated to about 50 ml volume and diluted with 100 ml of diethyl ether. The precipitate of the title compound was collected, washed with diethyl ether, and dried; yield, 0.49 gram; mp 257° C.-259° C. with decomposition.

1. concentrationThe solution was concentrated to about 50 ml volume
2. additiondiluted with 100 ml of diethyl ether
3. customThe precipitate of the title compound was collected
4. washwashed with diethyl ether
5. customdried
6. customyield