Palladium-catalyzed dehydrogenative annulation of imidazo[1,2-a]pyridines with diarylalkynes

被引：23

作者：

Ghosh, Monoranjan ^{[1
]}

Naskar, Aswini ^{[1
]}

Mishra, Subhajit ^{[1
]}

Hajra, Alakananda ^{[1
]}

机构：

[1] Visva Bharati, Dept Chem, Santini Ketan 731235, W Bengal, India

来源：

TETRAHEDRON LETTERS | 2015年 / 56卷 / 27期

关键词：

Palladium; Dehydrogenative annulation; C-H activation; Alkynes; Imidazo[1,2-a]pyridines; C-H FUNCTIONALIZATION; ONE-POT SYNTHESIS; OXIDATIVE ANNULATION; INTERNAL ALKYNES; FLUORESCENT; ACTIVATION; ACCESS; ARYL; IMIDAZOHETEROCYCLES; HETEROCYCLES;

D O I：

10.1016/j.tetlet.2015.05.028

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Palladium-catalyzed direct dehydrogenative annulation of imidazo[1,2-a]pyridines with diarylalkynes through dual cleavage of C-H bonds has been developed. This new strategy offers a straightforward route for the synthesis of pi-conjugated polyaromatic heterocycles from readily accessible imidazo[1,2-a]pyridine. An array of 2,3,4-triarylphenyl-1,7b-diaza-cyclopenta[cd]indene derivatives with broad functionalities are obtained in high yields by this protocol. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：4101 / 4104

页数：4

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