Cu-catalyzed transannulation reaction of pyridotriazoles with terminal alkynes under aerobic conditions: efficient synthesis of indolizines
作者:V. Helan、A. V. Gulevich、V. Gevorgyan
DOI:10.1039/c4sc03358b
日期:——
Cu(I)-catalyzed denitrogenative transannulation reaction of pyridotriazoles with terminalalkynes en route to indolizines was developed. Compared to the previously reported Rh-catalyzed transannulation reaction, this Cu-catalyzed method features aerobicconditions and a much broader scope of pyridotriazoles and alkynes.
开发了一种 Cu( I ) 催化的吡啶并三唑与末端炔烃脱氮转环反应生成中氮茚的过程。与之前报道的Rh催化转环反应相比,这种Cu催化方法具有需氧条件以及更广泛的吡啶并三唑和炔烃范围。
Silver-mediated synthesis of indolizines via oxidative C–H functionalization and 5-endo-dig cyclization
作者:Amit N. Pandya、James T. Fletcher、Eric M. Villa、Devendra K. Agrawal
DOI:10.1016/j.tetlet.2014.10.112
日期:2014.12
An efficient strategy for the synthesis of indolizines from readily available starting materials via oxidative C-H functionalization and 5-endo-dig cyclization in one step has been demonstrated. This protocol represents wide substrate scope, high functional group tolerance, and selectivity. The structure of the product was confirmed by X-ray crystallographic studies. Ag2CO3 required of this tandem reaction can be recycled and reused after undergoing oxidative reaction. (C) 2014 Elsevier Ltd. All rights reserved.
Iodine-Mediated Oxidative Cyclization of 2-(Pyridin-2-yl)acetate Derivatives with Alkynes: Condition-Controlled Selective Synthesis of Multisubstituted Indolizines
作者:Lisheng He、Yuzhu Yang、Xiaolan Liu、Guangyan Liang、Chunyan Li、Daoping Wang、Weidong Pan
DOI:10.1055/s-0039-1690229
日期:2020.2
An iodine-mediated oxidative cyclization reaction between 2-(pyridin-2-yl)acetate derivatives and different alkynes has been developed, which provides regioselective and chemoselective syntheses of multiply substituted indolizines under modified reaction conditions. Plausible mechanisms have been proposed to explain the selective syntheses of indolizines. This protocol can be also applied to the stepwise