Catalyst-Free Arylation of Tertiary Phosphines with Diaryliodonium Salts Enabled by Visible Light
Catalyst-Free Arylation of Tertiary Phosphines with Diaryliodonium Salts Enabled by Visible Light
复制标题
叔膦与二芳基碘鎓盐的可见光无催化芳基化反应
DOI：
10.1002/chem.201902955
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发表时间：
2019-09-03
影响因子：
4.3
通讯作者：
Karchava, Alexander, V
中科院分区：
文献类型：
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作者：
Bugaenko, Dmitry, I;Volkov, Alexey A.;Karchava, Alexander, V
可见光诱导的叔膦与芳基(甲苯基)三氟化碘的芳基化反应在温和、无金属和无催化剂的条件下进行，生成季膦盐。二芳基碘盐和膦之间的光激发EDA络合物被认为能够实现这种转化，这是通过传统的基态反应很难实现的。该方法表现出高的官能团耐受性、广泛的范围和芳基转移的完全选择性，特别适用于空间密集的膦类化合物，这在金属催化方法下是具有挑战性的。
The visible-light-induced arylation of tertiary phosphines with aryl(mesityl)iodonium triflates to produce the quaternary phosphonium salts occurs under mild, metal, and catalyst-free conditions. Photo-excited EDA complexes between diaryliodonium salts and phosphines supposedly enable this transformation, which is difficult to achieve through the traditional ground-state reactions. Demonstrating high functional group tolerance, broad scope, and complete selectivity of the aryl group transfer, the method is particularly compatible with sterically congested phosphines, which are challenging under metal-based catalytic methods.