Rhodium(III) catalysis has enabled a plethora of oxidative C−H functionalizations, which predominantly employ stoichiometric amounts of toxic and/or expensive metal oxidants. In contrast, we herein describe the first electrochemical rhodium‐catalyzedC−Hactivation that avoids hazardous chemical oxidants. Environmentally benign twofold C−H/C−H functionalizations were accomplished with weakly coordinating
A Strategy for Site‐ and Chemoselective C−H Alkenylation through Osmaelectrooxidative Catalysis
作者:Isaac Choi、Antonis M. Messinis、Xiaoyan Hou、Lutz Ackermann
DOI:10.1002/anie.202110616
日期:2021.12.20
The first osmium-catalyzed electrooxidative C−H annulation is disclosed. While improved selectivities are possible, unprecedented osmium intermediates are presented along with detailed kinetic studies, which revealed the working mode of osmaelectrocatalysis.
Iridium-Catalyzed Electrooxidative C−H Activation by Chemoselective Redox-Catalyst Cooperation
作者:Youai Qiu、Maximilian Stangier、Tjark H. Meyer、João C. A. Oliveira、Lutz Ackermann
DOI:10.1002/anie.201809611
日期:2018.10.22
cooperative catalysis manifold, setting the stage for electrooxidative C−H alkenylations through weak O‐coordination. The iridium‐electrocatalyzed C−H activation featured high functional‐group tolerance throughassistance of a metal‐free redox mediator through indirect electrolysis. Detailed mechanisticinsights provided strong support for an organometallic C−H cleavage and a synergistic iridium(III/I)/redox
(3Z)-3-(3-HYDRO-ISOBENZOFURAN-1-YLIDENE)-1,3-DIHYDRO-2H-INDOL-2-ONES AS KINASE INHIBITORS
申请人:ALLERGAN, INC.
公开号:EP1490356B1
公开(公告)日:2013-02-27
Ligand-Enabled C–H Olefination and Lactonization of Benzoic Acids and Phenylacetic Acids via Palladium Catalyst
作者:Yangyang Wang、Xiaobo Xu、Gaorong Wu、Binghan Pang、Shaowen Liao、Yafei Ji
DOI:10.1021/acs.orglett.1c04000
日期:2022.1.28
A novel ligand propan-2-one O-(p-tolylcarbamoyl) oxime (L7) has been developed to promote C(sp2)–H olefination of benzoic acids and phenylacetic acids via a palladiumcatalyst. With the subsequent lactonization of the olefinated products through 1,4-addition, highly monoselective cyclic lactone products of benzofuranones and benzopyrones were obtained in moderate to excellent yields. The DFT calculation
已开发出一种新型配体 propan-2-one O -( p -tolylcarbamoyl) oxime ( L7 ) 以通过钯催化剂促进苯甲酸和苯乙酸的C(sp 2 )-H 烯化。随后通过1,4-加成对烯烃产物进行内酯化,以中等至优异的产率获得苯并呋喃酮和苯并吡喃酮的高单选择性环状内酯产物。DFT计算表明,新型配体propan-2-one O -( p -tolylcarbamoyl) oxime ( L7 ) 可以改善C-H活化反应,优雅地生成环状内酯产物。