Regioselective Photocatalytic Dialkylation/Cyclization Sequence of 3‐Aza‐1,5‐dienes: Access to 3,4‐Dialkylated 4‐Pyrrolin‐2‐ones
作者:Xiao Hu、Minglin Tao、Zhongxiao Ma、Yi Zhang、Yanni Li、Deqiang Liang
DOI:10.1002/adsc.202200183
日期:2022.7.5
A visible-light-induced regioselective tandem enamido β-C(sp2)−H alkylation/acrylamido alkylation/cyclizative alkenylation sequence of 3-aza-1,5-dienes is presented. This protocol is regiospecific, features a broad substrate scope, and provides a direct access to 3,4-dialkylated 4-pyrrolin-2-ones from readily available N-alkenylacrylamides. It is readily scalable to a gram scale, and could be induced
提出了一种可见光诱导的区域选择性串联烯酰胺 β-C( sp 2 )-H 烷基化/丙烯酰胺烷基化/3-aza-1,5-二烯的环化烯基化序列。该协议具有区域特异性,具有广泛的底物范围,并提供从现成的N -alkenylacrylamides 中直接访问 3,4-二烷基化 4-pyrrolin-2-ones 的途径。它很容易扩展到克级,并且可以由自然阳光诱导。