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.
Electrochemical Fe-catalysed radical cyclization for the synthesis of oxindoles
作者:Tianxiang Ren、Ruina Qu、Lu Song
DOI:10.1039/d3ob01370g
日期:——
report an efficient and sustainable electrocatalytic approach for the synthesis of 3,3-disubstituted 2-oxindoles bearing ester groups from readily accessible N-arylacrylamides and carbazates. The reaction proceeds through an electrochemical iron-catalyzed radical addition/cyclization sequence with a commercially available iron catalyst and carbazates as alkoxycarbonyl radical precursors. This mild and operationally