Photochemical Decarboxylative C(sp<sup>3</sup>)–X Coupling Facilitated by Weak Interaction of N-Heterocyclic Carbene
作者:Kun-Quan Chen、Zhi-Xiang Wang、Xiang-Yu Chen
DOI:10.1021/acs.orglett.0c03006
日期:2020.10.16
still in its infancy. We demonstrate herein transition-metal-free decarboxylative C(sp3)–X bond formation enabled by the photochemical activity of the NHPI ester–NaI–NHC complex, giving primary C(sp3)–(N)phth, secondary C(sp3)–I, or tertiary C(sp3)–(meta C)phth coupling products. The primary C(sp3)–(N)phth coupling offers convenient access to primary amines.
尽管N-羟基邻苯二甲酰亚胺(NHPI)酯已成为一种强大的试剂,可作为各种C-C键形成的烷基自由基来源,但相应的C(sp 3)-N键形成仍处于起步阶段。我们在这里证明了NHPI酯-NaI-NHC复合物的光化学活性使无过渡金属的脱羧C(sp 3)-X键形成,从而形成了一级C(sp 3)-(N)phth,二级C(sp)3)–I或三次C(sp 3)–(元C)phth偶联产物。伯C(sp 3)–(N)phth偶联为伯胺提供了便捷的通道。