Transition-Metal-Free Synthesis of Indolizines from Electron-Deficient Alkenes via One-Pot Reaction Using TEMPO as an Oxidant
作者:Yu Zhang、Huayou Hu、Fei Shi、Zhaole Lu、Xiaolei Zhu、Weiqiu Kan、Xiang Wang
DOI:10.1055/s-0035-1560973
日期:——
Abstract A one-pot method for the synthesis of multisubstituted indolizines from α-halo carbonyl compounds, pyridines, and electron-deficient alkenes is reported. The oxidative dehydrogenation reaction takes place under transition-metal-free conditions using TEMPO as an oxidant. This protocol uses ready available starting materials in a convenientprocedure under mild reaction conditions. A one-pot method
Facile synthesis of indolizines using layered double hydroxides@poly(
<i>p</i>
‐phenylenediamine) as a catalyst with a green tool (neat technology)
作者:Zahra Karamshahi、Ramin Ghorbani‐Vaghei
DOI:10.1002/aoc.5347
日期:2020.3
phenacyl bromide, dimethyl acetylenedicarboxylate and pyridine is catalyzed by layered double hydroxides@poly(p‐phenylenediamine) (LDHs@PpPDA), in a one‐pot reaction, in order to give the corresponding indolizines in excellent yields.
In Situ Generation of Quinolinium Ylides from Diazo Compounds: Copper-Catalyzed Synthesis of Indolizine
作者:Rongxiang Chen、Yanwei Zhao、Hongmei Sun、Ying Shao、Yudong Xu、Meihua Ma、Liang Ma、Xiaobing Wan
DOI:10.1021/acs.joc.7b01042
日期:2017.9.15
The Cu-catalyzedthree-component reaction between quinolines, diazo compounds, and alkenes has been established for direct construction of indolizine derivatives via quinolinium ylides. This methodology is distinguished by the use of a commercially inexpensive catalyst and readily available starting materials, wide substrate scope, and operational simplicity.
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
Iodine-promoted synthesis of acylindolizine derivatives from acetylenecarboxylates and pyridinium, isoquinolinium, or quinolinium ylides
作者:Juanjuan Liu、Peiyun Yan、Yan Li、Zhengquan Zhou、Weijian Ye、Juan Yao、Cunde Wang
DOI:10.1007/s00706-013-1120-6
日期:2014.4
AbstractAn iodine-promoted synthesis of acylindolizinecarboxylates via 1,3-dipolar cycloaddition of nitrogen ylides with acetylenecarboxylates and subsequent aromatization for the generation of a wide range of structurally interesting, pharmacologically and photoelectrically significant compounds is reported. Only readily available materials, mild conditions, and operationally trivial reaction protocols