CuBr-Catalyzed Aerobic Decarboxylative Cycloaddition for the Synthesis of Indolizines under Solvent-Free Conditions
作者:Wenhui Wang、Junwen Han、Jinwei Sun、Yun Liu
DOI:10.1021/acs.joc.6b02455
日期:2017.3.17
An efficientsynthesis of diversified indolizine derivatives was developed via CuBr-catalyzed reaction of pyridines, methyl ketones and alkenoic acids under solvent-free conditions in oxygen atmosphere. This synthesis involves cascade processes of copper-catalyzed bromination of the methyl ketone, 1,3-dipolar cycloaddition of the pyridinium ylide with the alkenoic acid, followed by oxidative decarboxylation
TEMPO‐catalyzed decarboxylation reactions for the synthesis of 1,2‐unsubstituted indolizines
作者:Yuxuan Zhang、Wenhui Wang、Jinwei Sun、Yun Liu
DOI:10.1002/jhet.3766
日期:2020.1
An efficient synthesis of 1,2‐unsubstituted indolizines was developed via 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPO)–catalyzed decarboxylation reaction. A series of target products were successfully prepared with the tolerance of a variety of functional groups. This protocol features advantages such as easily available substrates, broad substituent scope, and eco‐friendly conditions.