反应详情

A solution containing 5.49 g of 3,4-dihydroxy-5-nitrobenzaldehyde and 5.37 g of 4,-methylacetophenone in 50 ml of tetrahydrofuran was added a catalytic amount of gaseous hydrogen chloride and refluxed for 4.5 h. The solvent was evaporated in vacuo and the residue crystallized from ether-petroleum-ether, yield 1.85 g (21%), m.p. 184°-186° C.

1. temperaturerefluxed for 4.5 h
2. customThe solvent was evaporated in vacuo
3. customthe residue crystallized from ether-petroleum-ether, yield 1.85 g (21%), m.p. 184°-186° C.