Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
Studies on Phenazines. XIX. Synthesis of Phenazine-carboxylic Acids.
Yoshinori Kidani
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Volume 7 (1959) Issue 1 Pages 88-90

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Abstract

By oxidation with chromium trioxide in the presence of conc. sulfuric acid at about 5∼15°, 6-hydroxyphenazine-1- and 9-hydroxyphenazine-2-carboxylic acids were obtained from their respective methylphenazine derivatives.

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