Molecular Oxygen-Promoted General and Site-Specific Alkylation with Organoboronic Acid
作者:Anbo Ling、Lizhi Zhang、Ren Xiang Tan、Zhong-Quan Liu
DOI:10.1021/acs.joc.8b02277
日期:2018.12.7
alkylating method using organoboronic acid under 1 atm of oxygen is developed. It allows a facile access to a widerange of functionalized molecules with privileged scaffolds in drugs and natural products such as oxindoles, quinolinones, chromones, naphthoquinones, coumarins, and quinolones. In contrast to previous alkylation approaches that generally requiring transition-metal catalysis and a stoichiometric
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