Decarboxylative Benzylation of Aryl and Alkenyl Boronic Esters
作者:Patrick J. Moon、Anis Fahandej‐Sadi、Wenyu Qian、Rylan J. Lundgren
DOI:10.1002/anie.201800829
日期:2018.4.16
The copper‐catalyzed decarboxylative benzylation of aryl and alkenyl boronicesters with electron‐deficient aryl acetates is reported. The oxidative coupling proceeds under mild, aerobic conditions and tolerates a host of potentially reactive electrophilic functional groups that would be problematic with traditional benzylation methods (aryl iodides and bromides, protic heteroatoms, aldehydes, Michael
A transition-metal-free direct trifluoromethylthiolation of the ipso-carbon of lithium aryl boronates with trifluoromethanesulfenate under mild conditions was described. In addition, late-stage site-selective C–H borylation/trifluoromethylation and C–Cl borylation/trifluoromethylthiolation of biologically active molecules was developed. Initial mechanistic study suggested that the Li+ cation plays