反应详情

A mixture of 3.0 g of the product of Example 1 and 10 ml of trimethylorthovalerate is heated at 130 C. for 30 minutes. The reaction mixture is cooled to room temperature and diluted with hexanes. The resulting colorless solid is collected by filtration, washed with hexanes and dried to give 2.0 g of the desired product as a solid, m.p. 190° C.

1. temperatureis heated at 130 C
2. filtrationThe resulting colorless solid is collected by filtration
3. washwashed with hexanes
4. customdried