Synthesis of 2,2′-biscarbazoles by reductive biaryl coupling

被引：0

作者：

Tasler, S ^{[1
]}

Endress, H ^{[1
]}

Bringmann, G ^{[1
]}

机构：

[1] Univ Wurzburg, Inst Organ Chem, D-97074 Wurzburg, Germany

来源：

SYNTHESIS-STUTTGART | 2001年 / 13期

关键词：

biscarbazole; directed ortho-metalation; reductive biaryl coupling; Ullmann reaction; hypervalent iodine;

D O I：

暂无

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The first reductive biaryl coupling of carbazoles is presented, along with the synthesis of the appropriately halogenated coupling substrates. A completely regioselective halogenation of carbazoles was achieved applying the DoM (Directed ortho-Metalation) strategy with different combinations of directing groups. In the course of the evaluation of a suitable method for benzylic oxidations of carbazolic alcohols, a new protocol using the hypervalent iodine reagent BTIB was established.

引用

页码：1993 / 2002

页数：10

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