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A novel synthesis of quinolinium salts via benzotriazole methodology

✍ Scribed by Alan R. Katritzky; Delphine Semenzin; Baozhen Yang; David P. M. Pleynet

Book ID
102339357
Publisher
Journal of Heterocyclic Chemistry
Year
1998
Tongue
English
Weight
290 KB
Volume
35
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

A novel method for the synthesis of 1,4‐ and 1,3,4‐substituted quinolinium salts and 1,2,4‐ and 1,2,3,4‐substituted‐1,2‐dibydroquinolines from N‐substituted‐N(benzotriazol‐1‐ylmethyl)aniline derivatives is reported.

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## Abstract Treatment of 10‐(benzotriazol‐1‐yl)alkylphenothiazine with electron‐rich alkenes in the presence of zinc bromide gave tetracyclic phenothiazines 4 and 9 as well as pentacyclic phenothiazines 5, which have potential use in the pharmaceutical industry.