Absolute configuration determination of 2-(2-oxo-3-indolyl)acetamide derivatives
摘要:
We describe a reliable method for determining the absolute configuration of 2-(2-oxo-3-indolyl)acetamides based on analysis of the H-1 NMR spectra of their phenylethylamide diastereomers. The conformational preferences for two diastereomeric amides were calculated by DFT, which matched well with the experimental results. X-ray diffraction analysis allowed us to validate the method. (C) 2009 Elsevier Ltd. All rights reserved.
Synthesis of Diversely Functionalized Oxindoles Enabled by Migratory Insertion of Isocyanide to a Transient σ-Alkylpalladium(II) Complex
作者:Wangqing Kong、Qian Wang、Jieping Zhu
DOI:10.1002/anie.201603950
日期:2016.8.8
Palladium‐catalyzed intramolecular carbopalladation of N‐aryl acrylamides followed by migratory insertion of an isocyanide‐coordinated C(sp3)−Pd intermediate afforded an alkylimidoyl−PdII complex, which can be intercepted by a nucleophile, including heteroarenes. In addition to amides, the alkylimidoyl−PdII complex was successfully converted into esters, ketones, and bis‐heterocyclic compounds. An
Iron-Catalyzed Arylalkoxycarbonylation of <i>N</i>-Aryl Acrylamides with Carbazates
作者:Xiangsheng Xu、Yucai Tang、Xiaoqing Li、Guo Hong、Mingwu Fang、Xiaohua Du
DOI:10.1021/jo402529r
日期:2014.1.3
A novel arylalkoxycarbonylation of N-aryl acrylamides with carbazates leading to alkoxycarbonylated oxindoles has been developed. The reported reactions employ economical and environmentally benign FeCl2 center dot 4H(2)O as a catalyst and easily accessible and safe carbazates as alkoxycarbonyl radical precursors.
Synthesis of oxindole-3-acetates through iron-catalyzed oxidative arylalkoxycarbonylation of activated alkenes
An iron-catalyzed alkoxycarbonylation/cyclization reaction of N-arylacrylamides with carbazates has been developed. This new alkene difunctionalization reaction provides an efficient and straightforward method to obtain various ester-containing oxindoles. (C) 2014 Elsevier Ltd. All rights reserved.