Facile synthesis of diverse isoindolinone derivatives via Ugi-4CR followed by Cu-catalyzed deamidative C(sp2)–C(sp3) coupling
摘要:
The present work highlights a synthetic approach to the diverse isoindolinone derivatives using Ugi-4CR followed by a Cu-catalyzed deamidative C-C coupling reaction.This two-step sequence tolerates a broad range of amines, aldehydes, and isocyanides as starting materials for Ugi-4CR products to provide medicinally relevant isoindolinone derivatives in moderate to good yields. (C) 2013 Elsevier Ltd. All rights reserved.
Nickel(0)-Catalyzed Cyclization of <i>N</i>-Benzoylaminals for Isoindolinone Synthesis
作者:Danielle M. Shacklady-McAtee、Srimoyee Dasgupta、Mary P. Watson
DOI:10.1021/ol201248c
日期:2011.7.1
A nickel(0) catalyst effectively mediates the cyclization of N-benzoyl aminals in the presence of a stoichiometric Lewis acid. This method enables preparation of a variety of isoindolinones with substitution on the benzoyl fragment and C-3 carbon. This reaction likely proceeds via an α-amidoalkylnickel(II) intermediate, which then may cyclize via either an electrophilic aromatic substitution or an