反应详情

4-Toluenesulphonyl chloride (1.3 g) was added in portions to a stirred solution of the product of step (c) (1.5 g) in pyridine at 0°-5° C. The mixture was stirred for 16 hours at 0°-5° C. then poured onto ice-hydrochloric acid and extracted with ether. The extract was washed with sodium bicarbonate and sodium chloride solutions, dried and evaporated to give the title compound as a pale oil.

1. additionthen poured onto ice-hydrochloric acid
2. extractionextracted with ether
3. washThe extract was washed with sodium bicarbonate and sodium chloride solutions
4. customdried
5. customevaporated