An efficient, copper-catalyzed [3+1+1] cycloaddition reaction was developed for the expedient synthesis of pharmacologically interesting polysubstituted pyrroles from easily available nitrones and α-acidic isocyanides. The given approach features a new mode of cycloaddition between nitrones and isocyanides with wide substrate scope, good functional group tolerance, and operational simplicity. The operando
Synthesis of novel isoxazolidine derivatives and studies for their antifungal properties
作者:K Ravi Kumar
DOI:10.1016/s0223-5234(03)00077-1
日期:2003.6
A series of novel 5-substituted isoxazolidine derivatives 3a(i-viii), 3b(i-viii) and 3c(i-viii) have been prepared and their antifungal activity on Aspergillus flavus, Fusarium moniliforme and Botrydiplodia theobromae have been evaluated. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
Rh(III)-Catalyzed C–H Cyclization of Arylnitrones with Diazo Compounds: Access to <i>N</i>-Hydroxyindolines
作者:Ramesh B. Dateer、Sukbok Chang
DOI:10.1021/acs.orglett.5b03273
日期:2016.1.4
We have developed the Cp*Rh(III)-catalyzed cyclization reaction of arylnitrones with diazo compounds to obtain N-hydroxyindoline products under mild conditions. The substrate scope and functional group compatibility were examined with the demonstration of synthetic utility.