Phosphine-mediated annulation of N-protected imines with DEAD
摘要:
In the presence of triphenylphosphine, the reactions of N-protected imines or their precursors with DEAD proceeded smoothly to give the corresponding functionalized 1H-1,2,4-triazole-1,4(5H)-di-carboxylate derivatives in good to high yields under mild conditions. A plausible mechanism has been proposed on the basis of the control experiments. (C) 2011 Elsevier Ltd. All rights reserved.
Phosphine-mediated annulation of N-protected imines with DEAD
作者:Zhong Lian、Xiao-Yang Guan、Min Shi
DOI:10.1016/j.tet.2011.01.072
日期:2011.3
In the presence of triphenylphosphine, the reactions of N-protected imines or their precursors with DEAD proceeded smoothly to give the corresponding functionalized 1H-1,2,4-triazole-1,4(5H)-di-carboxylate derivatives in good to high yields under mild conditions. A plausible mechanism has been proposed on the basis of the control experiments. (C) 2011 Elsevier Ltd. All rights reserved.