An alternative synthesis of benzobis(imidazolium) salts via a 'one-pot' cyclization/oxidation reaction sequence

被引：42

作者：

Boydston, Andrew J. ^{[1
]}

Khramov, Dimitri M. ^{[1
]}

Bielawski, Christopher W. ^{[1
]}

机构：

[1] Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA

来源：

TETRAHEDRON LETTERS | 2006年 / 47卷 / 29期

关键词：

CARBENE; COMPLEXES; DERIVATIVES; AZOPHENINE; POLYMERS; QUINONE;

D O I：

10.1016/j.tetlet.2006.05.076

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Cyclization of N-aryl and N-alkyl 2,5-diamino-1,4-benzoquinonediimines using paraformaldehyde under acidic conditions followed by oxidation with catalytic amounts of Pd(OAc)(2) afforded their respective benzobis(imidazolium) salts in yields of 48-98%. A comparative solid-state study between a 2,5-diamino-1,4-benzoquinonediimine and its corresponding benzobis(imidazolium) dichloride was also performed. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：5123 / 5125

页数：3

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