Synthesis 2008(11): 1788-1792  
DOI: 10.1055/s-2008-1067028
PAPER
© Georg Thieme Verlag Stuttgart · New York

Competition of the R3P/DAAD and RNC/DAAD Zwitterions in Their Production and Reaction with Aromatic Carboxylic Acids: A Novel Binucleophilic System for Three-Component Synthesis of 2-Aminofurans

Abdolali Alizadeh*a, Sadegh Rostamniaa, Long-Guan Zhub
a Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran 18716, Iran
Fax: +98(21)88006544; e-Mail: aalizadeh@modares.ac.ir;
b Chemistry Department, Zhejiang University, Hangzhou 310027, P. R. of China
Further Information

Publication History

Received 13 February 2008
Publication Date:
16 April 2008 (online)

Abstract

We recently reported a new class of triphenylphosphine and isocyanide based multicomponent reactions (Ph3P/DAAD and IMCRs/DAAD) mediated by R3P/DAAD and RNC/DAAD zwitter­ionic intermediates in the presence of CH, OH, and NH acids. Herein­, the reactions of Huisgen 1:1 zwitterionic intermediates, generated from dialkyl acetylenedicarboxylates (DAAD), trivalent phosphorus reagents, and isocyanides, with aromatic carboxylic acids as initial proton source are investigated. This novel binucleophilic (R3P-RNC/DAAD) system afforded 2-aminofuran derivatives.