Ru(II)-Catalyzed Oxidative Olefination of Benzamides: Switchable Aza-Michael and Aza-Wacker Reaction for Synthesis of Isoindolinones
作者:Manoj Kumar、Shalini Verma、Akhilesh K. Verma
DOI:10.1021/acs.orglett.0c01237
日期:2020.6.19
Selective tandem oxidative C–H olefination–aza-Michael/aza-Wacker reaction of N-arylbenzamides is achieved by fine-tuning between base and additive to access valuable 3-oxoisoindolinyls and 3-oxoisoindolinylidenes, respectively. Careful optimization and control experiments provides a guiding principle in the design of a proposed catalytic cycle. The copper–iminium complex acting as a precursor for
Copper-catalyzed highly efficient oxidative amidation of aldehydes with 2-aminopyridines in an aqueous micellar system
作者:Om P. S. Patel、Devireddy Anand、Rahul K. Maurya、Prem P. Yadav
DOI:10.1039/c5gc00628g
日期:——
An environmentally benign protocol for the synthesis ofN-(pyridine-2-yl)amides from aldehydes and 2-aminopyridines has been developed under mild conditions.
Transformation of aldehydes or alcohols to amides at room temperature under aqueous conditions
作者:Dao-Qing Dong、Shuang-Hong Hao、Hui Zhang、Zu-Li Wang
DOI:10.1016/j.cclet.2017.03.008
日期:2017.7
Abstract A novel and efficient method for the synthesis of amide has been developed. The reactions proceeded smoothly under aqueous conditions at room temperature and generated the corresponding products in good to excellent yields. It is worth noting that alkyl amines which did not react in known approaches are well tolerated in our system.
Metal-free TBHP-mediated oxidative ring openings of 2-arylimidazopyridines via regioselective cleavage of C–C and C–N bonds
作者:Kelu Yan、Daoshan Yang、Wei Wei、Guoqing Li、Mingyang Sun、Qingyun Zhang、Laijin Tian、Hua Wang
DOI:10.1039/c5ra17740e
日期:——
A highly regioselective TBHP-mediated ring opening of imidazopyridinesviacleavage of C–C and C–N bonds has been realized for the first time to afford usefulN-(pyridin-2-yl)benzamides under mild conditions.
Copper(<scp>ii</scp>)-mediated, carbon degradation-based amidation of phenylacetic acids toward <i>N</i>-substituted benzamides
作者:Leiling Deng、Bin Huang、Yunyun Liu
DOI:10.1039/c8ob00064f
日期:——
The unprecedented synthesis of N-aryl substituted benzamides via the assembly of primary amines and phenylacetic acids has been developed in the presence of copper(II) acetate. This tandem transformation involving carbon–carbon bond cleavage provides a complementary tool with particular application in the synthesis of secondary benzamides.