Polyguanidine as a highly efficient and reusable catalyst for Knoevenagel condensation reactions in water

XL Zhao, KF Yang, XG Liu, CL Ye, LW Xu…

Index: Zhao, Xian-Liang; Yang, Ke-Fang; Liu, Xuan-Gan; Ye, Chun-Lin; Xu, Li-Wen; Lai, Guo-Qiao Australian Journal of Chemistry, 2013 , vol. 66, # 4 p. 500 - 504

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Citation Number: 3

Abstract

Abstract Polyguanidine is used as a novel and highly efficient catalyst in the Knoevenagel reaction of aldehydes with active methylene compounds in water to afford substituted electrophilic alkenes. This method is applicable for a wide range of aldehydes including aromatic and heterocyclic substrates. The polyguanidine catalyst can be recovered by simple filtration and reused many times for the aqueous Knoevenagel reaction without ...