Redox condensation of o-halonitrobenzene with 1,2,3,4-tetrahydroisoquinoline: involvement of an unexpected auto-catalyzed redox cascade

被引:49
作者
Nguyen, T. B. [1 ]
Ermolenko, L. [1 ]
Al-Mourabit, A. [1 ]
机构
[1] Univ Paris Saclay, Univ Paris 11, CNRS UPR 2301, Inst Chim Subst Nat, 1 Av Terrasse, F-91198 Gif Sur Yvette, France
关键词
C-H ACTIVATION; BENZIMIDAZOLES; FUNCTIONALIZATION; CONSTRUCTION; RESOLUTION; AMINATION;
D O I
10.1039/c6cc01436d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A practical synthesis of fused benzimidazoles 5 has been developed by simply heating o-halonitrobenzenes 1 with tetrahydroisoquinolines 2. In this transformation, 2 played multiple roles as a building block, base and a double hydride donor in a cascade of uncatalyzed aromatic substitution, reduction of the nitro group, oxidation of the alpha-methylene group and condensation.
引用
收藏
页码:4914 / 4917
页数:4
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