Fourteen 1,2,3-triaroylindolizines were prepared conveniently by oxidation of corresponding N-aracyl pyridinium or substituted pyridinium bromides with a versatile oxidant TPCD [(Py4Co(HCrO4)2, tetrakis-pyridino-cobalt (II) dichromate] in 12-42 % yields.
CuBr
<sub>2</sub>
‐Promoted Multicomponent Aerobic Reaction for the Synthesis of 1,2,3‐Triaroylindolizines
作者:Jinwei Sun、Junwen Han、Yuxuan Zhang、Yun Liu
DOI:10.1002/jhet.3618
日期:2019.8
An efficient synthesis of 1,2,3‐triaroylindolizines has been developed via CuBr2‐promoted reaction of three molecules of aromatic methyl ketones and one molecule of pyridinederivative. A wide range of methyl aryl ketones and methyl heteroaryl ketones took part in the reaction and generate 1,2,3‐triaroylindolizines in good yields. This protocol also features such advantages as mild reaction conditions
A highly efficient method for the synthesis of 1,2,3-triaroylindolizines has been established from readily available methyl ketones and pyridines in the presence of iodine. This reaction also examplified the self-division of labor strategy in convergent domino synthesis. (C) 2012 Elsevier Ltd. All rights reserved.
One-pot multicomponent synthesis of polysubstituted indolizines
作者:Zhenjun Mao、Xuejian Li、Xufeng Lin、Ping Lu、Yanguang Wang
DOI:10.1016/j.tet.2011.10.083
日期:2012.1
Concise and efficient four-component tandem approaches to polysubstituted indolizines have been developed under metal-free and mild aerobic conditions in refluxing acetonitrile. The mechanism of the novel reactions was proposed involving the formation of pyridinium ylides and alpha,beta-unsaturated ketones with subsequent 1,3-dipolar cycloaddition and aromatization reaction. (C) 2011 Elsevier Ltd. All rights reserved.
A Facile Preparation of 1,2,3-Triaroylindolizines
作者:Xudong Wei、Yuefei Hu、Tingsheng Li、Hongwen Hu
DOI:10.1080/00397919208021344
日期:1992.7
Fourteen 1,2,3-triaroylindolizines were prepared conveniently by oxidation of corresponding N-aracyl pyridinium or substituted pyridinium bromides with a versatile oxidant TPCD [(Py4Co(HCrO4)2, tetrakis-pyridino-cobalt (II) dichromate] in 12-42 % yields.