Unexpected Selective Reduction of 3- and 6-Haloquinolines and 2-Bromo-1-methylbenzimidazole with Red Phosphorus in the KOH/DMSO System

V. A. Kuimov,S. F. Malysheva,N. A. Belogorlova,B. A. Trofimov

Doklady Rossijskoj akademii nauk Himiâ, nauki o materialah（2023）

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摘要

3-Bromo- and 6-chloroquinolines or 2-bromo-1-methylbenzimidazole react with red phosphorus in the KOH/DMSO (Н2О) system on heating (100–120°C, 3 h) to form in high yield the products of selective reduction (with retention of the aromatic heterocycle): quinoline or 1-methylbenzimidazole, respectively.

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关键词

red phosphorus,superbases,3-bromoquinoline,6-chloroquinoline,2‑bromo-1-methylbenz-imidazole,reduction

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