反应详情

A mixture of tetrahydrothiopyran-3-one-1,1-dioxide (2.80 g, 0.0189 moles), 3-nitrobenzaldehyde (2.85 g, 0.0189 moles), 2-hydroxyethyl-3-aminocrotonate (3.28 g, 0.0226 moles), ammonium acetate (0.291 g, 0.0038 moles) and ethanol (35 mL) was refluxed for 16 hours. After cooling to room temperature the resulting solid was isolated by filtration, washed with ethanol and diethyl ether. The product was dried under vacuum for 16 hours at room temperature affording the product; mp 233°-235° C.

1. temperaturewas refluxed for 16 hours
2. customwas isolated by filtration
3. washwashed with ethanol and diethyl ether
4. customThe product was dried under vacuum for 16 hours at room temperature
5. customaffording the product