反应详情

A mixture of the product of example 26 (7.8 g, 0.046 mol), water (7.5 ml), concentrated sulfuric acid (7.5 ml) and acetic acid (7.5 ml) was heated at reflux for 2 hours. After being cooled to room temperature, the mixture was poured into ice-water. The resulting solids were collected by filtration and washed by diethyl ether to give the titled product (6.8 g, 79%)

1. temperaturewas heated
2. temperatureat reflux for 2 hours
3. filtrationThe resulting solids were collected by filtration
4. washwashed by diethyl ether