cross‐coupling of aryl tosylates with alkyl and aryl Grignardreagents is reported. The catalytic system uses CoF3 and NHCs (NHC=N‐heterocyclic carbene) as ancillary ligands. The reaction proceeds via highly selective C−O bond functionalization, leading to the corresponding products in up to 98 % yield. The employment of alkylGrignardreagents allows to achieve a rare C(sp2)−C(sp3) cross‐coupling of
Transition-Metal-Catalyzed Cross-Couplings of Aryl Tosylates or Mesylates with Organoindium Reagents
作者:Jie Wu、Liang Zhang、Yong Luo
DOI:10.1055/s-0030-1258116
日期:2010.7
The first example of transition-metal-catalyzed cross-coupling reactions of aryl tosylates or mesylates with organoindium compounds is described. The desired carbon-carbon bond formation proceeds under mild conditions to generate the coupling products in good yields.