A Rh(<scp>ii</scp>)-catalyzed three-component reaction of 3-diazooxindoles with N,N-disubstituted anilines and glyoxylates for the synthesis of 3-aryl-3-substituted oxindoles
作者:Shi-Kun Jia、Long-Long Song、Yu-Bing Lei、A. Gopi Krishna Reddy、Dong Xing、Wen-Hao Hu
DOI:10.1039/c6ob01907b
日期:——
A simple and effective method for the synthesis of 3-aryl-3-substituted oxindole derivatives via a [Rh]-catalyzed three-componentreaction of 3-diazooxindoles with N,N-disubstituted anilines and glyoxylates is developed. This transformation is proposed to proceed through an intermolecular aldol-type trapping of zwitterionic intermediates.
Diastereoselective Intramolecular Aldol-Type Trapping of Zwitterionic Intermediates by Ketones for the Synthesis of Spiro[chroman-4,3′-oxindole] Derivatives
作者:Shikun Jia、Yubing Lei、Longlong Song、A. Gopi Krishna Reddy、Dong Xing、Wenhao Hu
DOI:10.1002/adsc.201600998
日期:2017.1.4
A simple, mild and efficient rhodium‐catalyzed aromatic C–H functionalization of α‐phenoxy ketones by 3‐diazooxindoles for the synthesis of the spiro[chroman‐4,3′‐oxindole] ring system is described. A series of functionalized spiro[chroman‐4,3′‐oxindole] derivatives bearing two adjacent quaternary carbon centers have been attained in a highly diastereoselective manner with very good yields. Control
Aromatic C–H Bond Functionalized via Zwitterion Intermediates to Construct Bioxindole Containing Continuous Quaternary Carbons
作者:Li Niu、Rou Pi、Suzhen Dong、Shunying Liu
DOI:10.1021/acs.joc.9b02228
日期:2019.12.6
3-amino-3'-aryl-bioxindole compounds containing continuous quaternary carbons as products is developed. This transformation is proposed to proceed in a Mannich-type trapping of a zwitterion intermediate initiated from aromatic C-H bond functionalization. Several of these compounds exhibit good inhibitory activity against growth of osteosarcoma cell lines.