Palladium-Catalyzed Alkylarylation of Acrylamides with Unactivated Alkyl Halides
作者:Hua Wang、Li−Na Guo、Xin-Hua Duan
DOI:10.1021/acs.joc.5b02433
日期:2016.2.5
An efficient palladium-catalyzed alkylarylation of acrylamides with unactivatedalkyl halides has been developed. This method is highlighted by its broad substrate scope and excellent functional group tolerance. In addition to alkyl halides, fluoroalkyl halides and benzyl bromides also participated well in this transformation. A detailed mechanistic investigation suggests that a radical pathway is
Copper-catalyzed alkylarylation of activated alkenes using isocyanides as the alkyl source: an efficient radical access to 3,3-dialkylated oxindoles
作者:Yaping Zhao、Zhenghua Li、Upendra K. Sharma、Nandini Sharma、Gonghua Song、Erik V. Van der Eycken
DOI:10.1039/c6cc02024k
日期:——
A novel and efficient protocol for the synthesis of 3,3-dialkylated oxindoles is described. The method involves a copper-catalyzed tandem radical addition/cyclization of N-arylacrylamides with the alkyl radicals generated from isocyanides....
Metal-free cascade oxidative decarbonylative alkylarylation of acrylamides with aliphatic aldehydes: a convenient approach to oxindoles via dual C(sp<sup>2</sup>)–H bond functionalization
作者:Luo Yang、Wen Lu、Wang Zhou、Feng Zhang
DOI:10.1039/c6gc00362a
日期:——
A convenient metal-free cascade oxidative decarbonylative alkylarylation of acrylamides with aliphaticaldehydes to provide quaternary oxindoles is developed.
Free-Radical Cascade Alkylarylation of Alkenes with Simple Alkanes: Highly Efficient Access to Oxindoles via Selective (sp<sup>3</sup>)C–H and (sp<sup>2</sup>)C–H Bond Functionalization
作者:Zejiang Li、Ye Zhang、Lizhi Zhang、Zhong-Quan Liu
DOI:10.1021/ol4032478
日期:2014.1.17
A copper-catalyzed alkylarylation of alkenes with simple alkanes was achieved, which not only provided an efficient method to prepare various alkyl-substituted oxindoles, but also represented a novel strategy for selective sp3 C–H functionalization/C–C bond formation via a free-radical cascade process. Additionally, selective activation of unactivated (sp3)C–H and (sp2)C–H bonds by one single step
Electrochemical cobalt-catalyzed C–H or N–H oxidation: a facile route to synthesis of substituted oxindoles
作者:Yue Yu、Peifeng Zheng、Yuanheng Wu、Xiaoyi Ye
DOI:10.1039/c8ob02485e
日期:——
Two comparable protocols for the electrochemical cobalt-catalyzed C–H/N–H oxidation have been exploited for the synthesis of substituted oxindoles via radical pathways. The electrochemical cobalt-catalyzed system was demonstrated to be efficient and eco-friendly and avoided the use of stoichiometric oxidants to afford the arylation or alkylation products in good yields at room temperature.