Citation: Shu Jiang TU, Xiao Hong LIU, Heng Jun MA, Da Qing SHI, Fang LIU. 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[J]. Chinese Chemical Letters, ;2002, 13(5): 393-395. shu

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

Department of Chemistry, Xuzhou Normal University, Xuzhou 221009

Received Date: 17 July 2001

Aseries of tetrahydrobenzo-[b]-pyran derivative was synthesized by the reaction of arylmethylene malononitrile or arylmethylene cyanoacetate with dimedone in ethylene glycol at 80℃ without catalyst. The structures of the two products were characterized by X-ray diffraction.
- Benzo-[b]-pyran,
- dimetone,
- ethylene glycol
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