Electrocatalytic multicomponent cyclization of aromatic aldehydes, malononitrile, and malonates into 3-substituted 2,2-dicyanocyclopropane-1,1-dicarboxylates
作者:A. N. Vereshchagin、M. N. Elinson、A. S. Dorofeev、G. I. Nikishin
DOI:10.1007/s11172-009-0113-4
日期:2009.5
Electrolysis of aromatic aldehydes, malononitrile and malonates in methanol in an undivided cell in the presence of double-mediator system NaBr-NaOAc afforded 3-substituted 2,2-dicyanocyclopropane-1,1-dicarboxylates in 40–60% yields.
Electrocatalytic multicomponent cyclization of an aldehyde, malononitrile and a malonate into 3-substituted-2,2-dicyanocyclopropane-1,1-dicarboxylate—the first one-pot synthesis of a cyclopropane ring from three different molecules
作者:Michail N. Elinson、Sergey K. Feducovich、Anatolii N. Vereshchagin、Sergey V. Gorbunov、Pavel A. Belyakov、Gennady I. Nikishin
DOI:10.1016/j.tetlet.2006.10.075
日期:2006.12
Electrolysis of an aldehyde, malononitrile and a malonate in an alcohol in an undivided cell in the presence of sodium acetate-sodium halide as a double mediatory system results in the formation of 3-substituted-2,2-dicyanocyclopropane-1,1-dicarboxylates in 40-60% yields. (c) 2006 Elsevier Ltd. All rights reserved.
Reaction of organozinc reagents formed in reaction of dibromomalonic acid dialkyl esters and zinc, with 2-arylmethylenemalonic acid dinitriles and 3-aryl-2-cyanopropenoic acid methyl esters
作者:V. V. Shchepin、Yu. G. Stepanyan、P. S. Silaichev、M. I. Kodess
DOI:10.1134/s1070363206120152
日期:2006.12
Organozinc compounds, obtained from dibromomalonic acid dialkyl esters and zinc, react with 2-arylmethylmalonic acid dinitrites and 3-aryl-2-cyanopropenoic acid methyl esters forming 3-aryl-2,2-di-cyanocyclopropane-1,I-dicarboxylic acid dialkyl esters and 3-aryl-2-cyanocyclopropane-1,1,2-tricarboxylic acid trimethyl esters. H-1 and C-13 NMR, (3)J(CH) constants are considered.