Catalyst‐Free Arylation of Tertiary Phosphines with Diaryliodonium Salts Enabled by Visible Light
作者:Dmitry I. Bugaenko、Alexey A. Volkov、Mikhail V. Livantsov、Marina A. Yurovskaya、Alexander V. Karchava
DOI:10.1002/chem.201902955
日期:2019.9.25
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
在温和,无金属和无催化剂的条件下,发生可见光诱导的叔膦与芳基(间苯二甲氧基)碘鎓三氟甲磺酸酯的芳基化反应,生成季phospho盐。据推测,二芳基碘鎓盐和膦之间的光激发EDA络合物能够实现这种转化,而这种转化很难通过传统的基态反应来实现。该方法显示出高的官能团耐受性,广泛的范围和芳基基团转移的完全选择性,该方法特别适合于在基于金属的催化方法中具有挑战性的空间拥挤的膦。