straightforward and sustainable approach for the 1,2-addition of propiolic acids to ynamide has led to bench-stable sp2 (E)-enol-enamides of enediynes and dienynes. The reaction is chemo-, regio-, and stereoselective and does not require metal catalysts and solvent. The ynamide motif is extremely amenable to functionalization in the presence of the tethered alkyne triple bond. The synthetic technique is operationally
一种直接且可持续的方法将 1,2-
丙炔酸添加到 ynamide 中,导致了烯二炔和二炔的工作台稳定的 sp 2 ( E )-烯醇-烯酰胺。该反应具有
化学选择性、区域选择性和立体选择性,不需要
金属催化剂和溶剂。在存在栓系
炔烃三键的情况下,ynamide 基序非常适合官能化。合成技术操作简单;在酸性条件下不会发生酮
亚胺物种的
水解。该转化容忍了广泛的常见官能团,构建了一个高度功能化的 1,5,5'/6'-烯二炔和 sp 2 ( E )- N , O -
缩醛骨架的 1,5,5'-二烯的文库.