Electrochemically induced chain transformation of salicylaldehydes and alkyl cyanoacetates into substituted 4H-chromenes
作者:Michail N. Elinson、Alexander S. Dorofeev、Sergey K. Feducovich、Sergey V. Gorbunov、Ruslan F. Nasybullin、Nikita O. Stepanov、Gennady I. Nikishin
DOI:10.1016/j.tetlet.2006.08.053
日期:2006.10
Electrolysis of salicylaldehydes and alkyl cyanoacetates in ethanol in an undivided cell in the presence of sodium bromide results in the formation of substituted alkyl 2-amino-4-(1-cyano-2-alkoxy-2-oxoethyl)-4H-chromene-3-carboxylates in 85-95% yields. (c) 2006 Elsevier Ltd. All rights reserved.
Potassium exchanged layered zirconium phosphate as catalyst in the preparation of 4H-chromenes
Substituted 4H-chromenes were easily prepared by reaction of salicylaldehydes and ethylcyanoacetate in solvent free conditions using potassium exchanged layered zirconium phosphate as catalyst. (c) 2005 Elsevier Ltd. All rights reserved.
OCALLAGHAN, C. N.;MCMURRY, T. B. H., PROC. ROY. IRISH ACAD. B , 89,(1989) N-52, C. 229-234
作者:OCALLAGHAN, C. N.、MCMURRY, T. B. H.
DOI:——
日期:——
US6492389B1
申请人:——
公开号:US6492389B1
公开(公告)日:2002-12-10
Electrocatalytic chain transformation of salicylaldehyde and CH acids into substituted 4H-chromenes
作者:S. K. Feducovich、M. N. Elinson、A. S. Dorofeev、S. V. Gorbunov、R. F. Nasybullin、N. O. Stepanov、G. I. Nikishin
DOI:10.1007/s11172-008-0093-9
日期:2008.3
Electrochemically initiated catalytic chain transformation of salicylaldehydes and CH acids containing the cyano group in an ethanolicsolution in an undivided cell produced substituted 4H-chromenes in 85–95% yields.