Michael Addition Reaction without Catalyst: The Synthesis of 2-Amino-5, 6, 7, 8-tetrahydro-5-oxo-4-aryl-7, 7-dimethyl- 4H-benzo-”b”-pyran Derivatives
Aseries of tetrahydrobenzo-”b”-pyran derivative was synthesized by the reaction of arylmethylene malononitrile or arylmethylene cyanoacetate with dimedone in ethylene glycol at 80(C without catalyst. The structures of the two products were characterized by X-ray diffraction.
Bcnzo-”b”-pyran、dimetone、ethylene glycol
13
2004-01-08(万方平台首次上网日期,不代表论文的发表时间)
共3页
393-395