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■ An Efficient One-Pot Synthesis of 1-Amino-3-cyano-4-aryl-10-ethoxycarbonylazuleno[2,1-b]pyrans

Dao-Lin Wang,* Shan-Shan Feng, Qing-Tao Cui, and Jia-Yi Yu

*Liaoning Key Laboratory of Synthesis and Application of Functional Compound, College of Chemistry & Chemical Engineering, Bohai University, Jinzhou 121001, China

Abstract

An efficient and easy method for the one-pot three-component synthesis of 2-amino-3-cyano-4-aryl-10-ethoxycarbonylazuleno[2,1-b]pyran derivatives by the three-componenet condensation of ethyl 2-hydroxyazulene-1-carboxylate, aldehydes, and malononitrile in the presence of diazabicyclo[2.2.2]octane (DABCO) has been described.