Tetrahedron letters

Lewis acidic ionic liquids for the synthesis of electrophilic alkenes via the Knoevenagel condensation

JR Harjani, SJ Nara, MM Salunkhe

文献索引：Harjani, Jitendra R; Nara, Susheel J; Salunkhe, Manikrao M Tetrahedron Letters, 2002 , vol. 43, # 6 p. 1127 - 1130

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被引用次数: 244

摘要

1-Butyl-3-methylimidazolium chloroaluminate,[bmim] Cl· AlCl3, N= 0.67 and 1- butylpyridinium chloroaluminate,[bpy] Cl· AlCl3, N= 0.67 ionic liquids were found to work well as the Lewis acid catalyst and solvent in the Knoevenagel condensations of benzaldehyde and substituted benzaldehydes with diethyl malonate to give benzylidene malonates. The benzylidene malonates subsequently underwent Michael additions with ...