A copper-catalyzed coupling reaction of vinyl halides and carbazates: application in the assembly of polysubstituted pyrroles
作者:Chengang Zhou、Dawei Ma
DOI:10.1039/c3cc49724k
日期:——
CuI-catalyzed coupling of vinyl halides with carbazates gives N-protected N-alkenylhydrazines, which are condensed with ketones under acidic conditions to give polysubstituted pyrroles. The pyrrole synthesis may go through a similar mechanism with Fischer indole synthesis, which involves a [3,3]-sigmatropic rearrangement and other reactions.
CuI催化的乙烯基卤化物与氨基甲酸酯的偶合生成N-保护的N-烯基肼,将其在酸性条件下与酮缩合,得到多取代的吡咯。吡咯合成可能会通过与Fischer吲哚合成相似的机理进行,其中涉及[3,3]-σ重排和其他反应。