Iron-catalyzed aerobic difunctionalization of alkenes: a highly efficient approach to construct oxindoles by C–S and C–C bond formation
作者:Tao Shen、Yizhi Yuan、Song Song、Ning Jiao
DOI:10.1039/c4cc00401a
日期:——
A novel iron-catalyzed efficient approach to construct sulfone-containing oxindoles, which play important roles in the structural library design and drug discovery, has been developed. The use of readily available benzenesulfinic acids, an inexpensive iron salt as the catalyst, and air as the oxidant makes this sulfur incorporation protocol very efficient and practical.
Palladium-Catalyzed Oxidative Arylalkylation of Activated Alkenes: Dual CH Bond Cleavage of an Arene and Acetonitrile
作者:Tao Wu、Xin Mu、Guosheng Liu
DOI:10.1002/anie.201104575
日期:2011.12.23
but two: The title reaction proceeds through the dual CHbondcleavage of both aniline and acetonitrile (see scheme). The reaction affords a variety of cyano‐bearing indolinones in excellent yield. Mechanistic studies demonstrate that this reaction involves a fast arylation of the olefin and a rate‐determining CH activation of the acetonitrile.
Palladium-Catalyzed Oxidative Aryltrifluoromethylation of Activated Alkenes at Room Temperature
作者:Xin Mu、Tao Wu、Hao-yang Wang、Yin-long Guo、Guosheng Liu
DOI:10.1021/ja210614y
日期:2012.1.18
A palladium-catalyzed intramolecular oxidative aryltrifluoromethylation reaction of activated alkenes has been explored. The reaction allows for an efficient synthesis of a variety of CF(3)-containing oxindoles. Preliminary mechanistic study indicated that the reaction involves a C(sp(3))-Pd(IV)(CF(3)) intermediate, which undergoes reductive elimination to afford a C(sp(3))-CF(3) bond.
Divergent Radical Cyclization and Hydroaminoalkylation of <i>N</i>-Arylacrylamides Using Photoredox Catalysis
作者:Xinhan Li、Hengyuan Zhao、Li Meng、Jun Dong、Chunhui Yang、Zixiang Wei、Xianming Wang、Jianbin Xu、Baomin Fan
DOI:10.1021/acs.joc.2c02709
日期:2023.5.5
visible-light photoredox intermolecular catalysis of N-arylacrylamides that are α-C–H functionalized with aryl tertiary amines. The photocatalyst acts as a chemical switch to trigger two different reaction pathways and to obtain two different products from the same starting material. Simple adjustments to the reaction conditions enable the divergent synthesis of the oxidative cyclizations or the addition