Synthesis and Crystal Structure of 4, 7??Diaryl??5??oxo??4H??benzo [b] pyran Derivatives

…, LZ Chen, XL Hu, M Wang, GF Han

Index: Cui, Bin; Chen, Li-Zhuang; Hu, Xiao-Lei; Wang, Ming; Han, Guang-Fan Journal of Heterocyclic Chemistry, 2012 , vol. 49, # 4 p. 900 - 904

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Citation Number: 2

Abstract

Abstract A green and convenient approach to the synthesis of a series of 4, 7-diaryl-5-oxo- 4H-benzo [b] pyran derivatives from appropriate aromatic aldehydes and 5-aryl-1, 3- cyclohexanedione with malononitrile in the presence of dilute HCl as catalyst (30 mmol/L) is described. This method provides several advantages such as environmental friendliness, low cost, high yields, and simple work up procedure. The structures of all compounds ...

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