Selective Synthesis of 3-Aryl Quinolin-2(1<i>H</i>)-ones and 3-(1-Arylmethylene)oxindoles Involving a 2-Fold Arene C−H Activation Process
作者:Dong-Jun Tang、Bo-Xiao Tang、Jin-Heng Li
DOI:10.1021/jo901314t
日期:2009.9.4
A novel and selective palladium-catalyzed C-H activation protocol has been developed for the synthesis of 3-aryl quinolin-2(1H)-ones and 3-(1-arylmethylene)oxindoles with use of PivOH as the switch. In the presence of Pd(OAc)(2), AgOAc, and PivOH, a variety or N-methyl anilides reacted with arenes to afford the corresponding 3-aryl quinolin-2(l H)-ones in moderate yields, whereas the selectivity was shifted toward 3-(1-arylmethylene)oxindoles in the absence of PivOH.
Palladium Nanoparticle-Catalyzed Stereoselective Domino Synthesis of All-Carbon Tetrasubstituted Olefin Containing Oxindoles via Carbopalladation/C–H Activation
作者:Naziya Parveen、Govindasamy Sekar
DOI:10.1021/acs.joc.0c00915
日期:2020.8.21
catalyzed single-step, stereoselective domino synthesis of symmetrically and unsymmetrically all-carbon tetrasubstituted olefin containing oxindoles from readily accessible anilides has been developed. The Pd-BNP catalyst showed a wide range of functional group tolerance that enabled building a library of heteroaromatics. This reusable Pd catalyst reflected its utility in the synthesis of biologically important