malononitriles/methylcianoor ethylciano acetates in a onepot reaction catalyzed by silica sodium carbonate nanoparticles (SSC NPs) is described. In this reaction, SSC NPs demonstrated high efficiency as catalyst to obtain target products. By this achievement, a wide range of α,β-unsaturated compounds as Knoevenagel condensation products with good to excellent yields are obtained from reaction between numerous
作者:Hui Xu、Xinhong Yu、Leying Sun、Jing Liu、Wen Fan、Yongjia Shen、Wei Wang
DOI:10.1016/j.tetlet.2008.05.122
日期:2008.8
A powerful microwave-assisted three-component Knoevenagel-nucleophilic aromatic substitution reaction of 4-halobenzaldehydes, cyanoacetatic acid esters/cyanoacetamides, and cyclic secondary amines has been developed. (C) 2008 Elsevier Ltd. All rights reserved.
Molybdenum Oxide Nanoparticles as Recyclable Heterogeneous Catalyst for Synthesis of Arylidene Ethyl Cyanoacetates
of arylidene ethylcyanoacetate derivatives in the presence of catalytic amounts of molybdenum oxide nanoparticles (MoO₃ NPs) under green conditions at ambient temperature. From the reaction, a wide range of novel arylidene ethylcyanoacetates was successfully synthesized with high yields from the Knoevenagel condensation reaction between various aryl aldehydes and ethylcyanoacetate in the presence