Copper‐Catalyzed Regioselective 1,4‐Phosphinoylcyanation of 1,3‐Enynes with Diarylphosphine Oxides and TMSCN
作者:Yunhe Lv、Jinhui Xie、Weiya Pu、Xue Wang、Huanhuan Zhang、Xuerui Li、Yan Liu、Fei Chen、Yunfeng Xu
DOI:10.1002/adsc.202300824
日期:2023.12.5
4-phosphinoylcyanation of 1,3-enynes with diarylphosphine oxides and trimethylsilyl cyanide. The reaction produced various tetrasubstituted phosphinoyl- and cyano-containing allenes with high functional group compatibilities in good yields under mild reaction conditions. A preliminary reaction mechanism involving the formation of phosphinoyl radicals and their regioselective addition to 1,3-enynes was also proposed
我们建立了铜催化 1,3-烯炔与二芳基膦氧化物和三甲基甲硅烷基氰化物的三组分 1,4-膦酰氰化反应的策略。该反应在温和的反应条件下以良好的产率产生了各种具有高官能团相容性的四取代膦酰基和氰基丙二烯。还提出了涉及膦酰基自由基的形成及其对 1,3-烯炔的区域选择性加成的初步反应机制。