Issue 18, 2000
From the journal:

Journal of the Chemical Society, Perkin Transactions 1

Synthesis of 4-azido-3-diazo-3H-pyrazolo[3,4-b]quinoline from 3-amino-4-hydrazino-1H-pyrazolo[3,4-b]quinoline1

Wolfgang Stadlbauer*a  and  Gerhard Hojasa  

* Corresponding authors

a Institute of Chemistry, Organic Synthesis Group, Karl-Franzens University of Graz, Heinrichstrasse 28, Graz, Austria

Abstract

The reaction of 3-amino-4-hydrazino-1H-pyrazolo[3,4-b]quinoline 8 with nitrous acid did not give 2,4-diazidoquinoline-3-carbonitrile 5 as reported previously, but afforded in 60% yield 4-azido-3-diazopyrazolo[3,4-b]quinoline 10, which gave by azo coupling with 2-naphthol 4-azido-3-(2-hydroxy-1-naphthylazo)-1H-pyrazolo[3,4-b]quinoline 11.

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Article information

DOI
https://doi.org/10.1039/B004681G
Article type
Paper
Submitted
13 Jun 2000
Accepted
25 Jul 2000
First published
30 Aug 2000

J. Chem. Soc., Perkin Trans. 1, 2000, 3085-3087

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Synthesis of 4-azido-3-diazo-3H-pyrazolo[3,4-b]quinoline from 3-amino-4-hydrazino-1H-pyrazolo[3,4-b]quinoline

W. Stadlbauer and G. Hojas, J. Chem. Soc., Perkin Trans. 1, 2000, 3085 DOI: 10.1039/B004681G

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