Chelating Group Enabled Palladium‐Catalyzed Regiodivergent Carbonylative Synthesis of 2,3‐Dihydroquinolin‐4(1
<i>H</i>
)‐ones
作者:Jun Ying、Jian‐Shu Wang、Lingyun Yao、Wangyang Lu、Xiao‐Feng Wu
DOI:10.1002/chem.202003003
日期:2020.11.17
A new procedure on palladium‐catalyzed carbonylative cyclization of N‐(2‐pyridyl)sulfonyl (N‐SO2Py)‐2‐iodoanilines with terminal alkenes has been developed for the rapid construction of dihydroquinolin‐4(1H)‐one scaffolds. Enabled by the chelating group and using benzene‐1,3,5‐triyl triformate (TFBen) as the CO source, both aromatic and aliphatic alkenes were smoothly transformed into the corresponding
为了快速构建二氢喹啉-4(1 H)-一个骨架,开发了一种新的钯催化N-(2-吡啶基)磺酰基(N- SO 2 Py)-2-碘苯胺的羰基环化反应的新方法。。在螯合基团的作用下,并使用苯-1,3,5-三甲酸三苯酯(TFBen)作为CO源,芳族和脂族烯烃均顺利地转化为相应的2,3-二氢喹啉-4(1 H)-酮。产量高,区域选择性好。值得注意的是,芳族烯烃的反应会生成2-芳基-2,3-二氢喹啉-4(1 H)-,而3-烷基-2-3,3-二氢喹啉-4(1 H)当使用脂肪族烯烃时获得一。该方案也已经应用于抗肿瘤剂A的合成。