反应详情

Ethyl 5-methylisoxazol-4-yl carboxylate (65 g) was heated under reflux in 10M HCl (500 ml) for 3 hours. On cooling the product crystallised out. This was filtered and dried giving 42 g of a white crystalline solid, m.p. 134°-136° C.

1. temperatureOn cooling the product
2. customcrystallised out
3. filtrationThis was filtered
4. customdried