Reactions of salicyl N-tosylimines or salicylaldehydes with diethyl acetylenedicarboxylate for the synthesis of highly functionalized chromenes
作者:Ying-Wen Guo、Yong-Ling Shi、Hong-Bin Li、Min Shi
DOI:10.1016/j.tet.2006.04.011
日期:2006.6
Reactions of diethyl acetylenedicarboxylate with salicyl N-tosylimines or salicylaldehydes proceeded smoothly in the presence of DABCO or dimethylphenylphosphine under mild conditions to give the corresponding chromenes in excellent yields. (c) 2006 Elsevier Ltd. All rights reserved.