Base-mediated 1,3-dipolar cycloaddition of pyridinium bromides with bromoallyl sulfones: a facile access to indolizine scaffolds
作者:Chetna Jadala、Velma Ganga Reddy、Namballa Hari Krishna、Nagula Shankaraiah、Ahmed Kamal
DOI:10.1039/d0ob01696a
日期:——
synthetic strategy has been developed for the construction of substituted indolizines from a unique combination of pyridiniumsalts and 2-bromoallyl sulfones. This approach does not compromise with the diverse substitutions on both the pyridiniumsalts and 2-bromoallyl sulfones. Wide substrate scope, operational simplicity, milder reaction conditions and good to moderate yields are the merits associated with
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
A formal [3 + 2] annulation reaction of propargyl sulfonium compounds and <i>N</i>-ylides: access to pyrrolo[2,1-<i>a</i>]quinolines, pyrrolo[2,1-<i>a</i>]phthalazines and indolizines
作者:Jing Zheng、Xiaojie He、Hong Xu、Hua Liu、Weiran Yang
DOI:10.1039/d0ob01739f
日期:——
A sequential [3 + 2] annulation of prop-2-ynylsulfonium salt and N-ylides was developed, leading to the formation of a series of pyrrolo[2,1-a]quinolines, pyrrolo[2,1-a]phthalazines and indolizines. The protocol featured the simultaneous one-pot formation of three new C–C bonds in moderate yields under mild conditions. In this reaction, the prop-2-ynylsulfonium salts acted as the C2 synthons and sulfide
开发了丙-2-炔基锍盐和N-叶立德的顺序[3 + 2]环化,导致形成一系列吡咯并[2,1 - a ]喹啉、吡咯并[2,1 - a ]酞嗪和中氮茚。该协议的特点是在温和条件下以中等收益率同时一锅形成三个新的 C-C 键。在该反应中,prop-2-ynyl 锍盐充当 C2 合成子,硫化物充当离去基团。所得产物可作为合成多种化合物的有用前体。
Structures and ambiphilic reactivities of indolizines. 5. Acylation of 2-methylindolizine
作者:S. I. Bobrovskii、D. E. Lushnikov、Yu. G. Bundel'
DOI:10.1007/bf00473864
日期:1989.12
SASHIDA, HARUKI;KATO, MASANOBU;TSUCHIYA, TAKASHI, CHEM. AND PHARM. BULL., 36,(1988) N0, C. 3826-3832