Ambient-Temperature Ortho C–H Arylation of Benzoic Acids with Aryl Iodides with Ligand-Supported Palladium Catalyst
摘要:
The ambient-temperature ortho C-H arylation of electron-deficient benzoic acids with aryl iodides has been achieved by using an Ac-Ile-OH-supported Pd catalyst. A wide range of unactivated benzoic adds could cross-couple an array of aryl iodides in moderate to excellent yields: The choice of HFIP as a solvent is crucial to realizing the mild C-H arylation;, and the beneficial effect of the ligand on the reaction likely stems from the accelerated C-H activation process and the improved catalyst lifetime.