Ruthenium-Catalyzed Oxidative Coupling/Cyclization of Isoquinolones with Alkynes through CH/NH Activation: Mechanism Study and Synthesis of Dibenzo[<i>a</i>,<i>g</i>]quinolizin-8-one Derivatives
作者:Bin Li、Huiliang Feng、Nuancheng Wang、Jianfeng Ma、Haibin Song、Shansheng Xu、Baiquan Wang
DOI:10.1002/chem.201201862
日期:2012.10.1
mechanism of [RuCl2(p‐cymene)}2]‐catalyzed oxidative annulations of isoquinolones with alkynes was investigated in detail. The first step is an acetate‐assisted CH bond activation process to form cyclometalated compounds. Subsequent mono‐alkyne insertion of the RuC bonds of the cyclometalated compounds then takes place. Finally, oxidativecoupling of the CN bond of the insertion compounds occurs to