Iodine-mediated one-pot synthesis of C-3 acylated indolizines from pyridines, aryl methyl ketones and acrylate derivatives
作者:Youlai Fang、Lisheng He、Weidong Pan、Yuzhu Yang
DOI:10.1016/j.tet.2019.05.058
日期:2019.7
reaction from pyridines, aryl methyl ketones and electron deficient acrylates has been accomplished in a “one-pot” manner, which provides a straightforward and efficient access to C-3 acylated indolizines. The key intermediate of N-ylides is hypothesized to be generated in situ from pyridines and (hetero)aryl methyl ketones in the presence of iodine. This method has been applied in the synthesis of two
Palladium-Catalyzed Oxidative C−H Bond and C═C Double Bond Cleavage: C-3 Acylation of Indolizines with α,β-Unsaturated Carboxylic Acids
作者:Yuzhu Yang、Li Chen、Zhaoguo Zhang、Yuhong Zhang
DOI:10.1021/ol200025k
日期:2011.3.18
A novel palladium-catalyzed C-3 acylation of indolizines with α,β-unsaturated carboxylic acids via C−H bond and C═C double bond cleavage under oxidative conditions is described. The regioselectivity is assisted by the carboxylic group, and the selection of the oxidant is crucial to the reaction.
Facile approach to diverse 3-acylated indolizines via a sequential Sonogashira coupling/iodocyclization process
作者:Youngeun Jung、Ikyon Kim
DOI:10.1016/j.tet.2012.07.068
日期:2012.9
Successful implementation of a sequential Pd-catalyzed Sonogashira cross-coupling/iodine-promoted 5-exo-dig cyclization procedure with pyridines bearing a terminalalkyne moiety provided direct and straightforward access to a diverse array of 3-acylated indolizines under mild conditions.