反应详情

A solution of 86 g of crotonic acid (1 mole) and ethanolamine (1 mole) in pyridine (200 ml) is refluxed for 2-3 hours and subsequently cooled. The resulting product is filtered and recrystallized to yield the title compound having m.p. 178-180° C. (Compound 1.1, Table 1).

1. temperaturesubsequently cooled
2. filtrationThe resulting product is filtered
3. customrecrystallized