Synthesis and single-crystal X-ray diffraction analysis of new heterocyclic coloured materials. 3-Arylazo-8H-imidazo[1,2-b] pyrazolo[4,3-d]pyridazines

被引：15

作者：

Farghaly, Thoraya A. ^{[1
]}

Shawali, Ahmad Sami ^{[1
]}

机构：

[1] Cairo Univ, Fac Sci, Dept Chem, Giza 12613, Egypt

来源：

TETRAHEDRON | 2010年 / 66卷 / 14期

关键词：

Heterocycles; Azo dyes; Hydrazonoyl halides; Formazans; Hydrazones; TAUTOMERIC STRUCTURE; HYDRAZIDOYL HALIDES; ABSORPTION-SPECTRA; PYRAZOLE;

D O I：

10.1016/j.tet.2010.02.012

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A simple synthetic strategy is described for the hitherto unreported 3-arylazo-8H-imidazo[1,2-b]pyrazolo[4,3-d]pyridazines 7 is described based on the reaction of 3-acetyl-4-cyano-1,5-diphenylpyrazole hydrazone 3 with the hydrazonoyl halides 1a-1 The structures of such dyes were confirmed by spectroscopic and X-ray crystallographic analyses The mechanism of formation of such compounds was also discussed (C) 2010 Elsevier Ltd All rights reserved

引用

页码：2700 / 2704

页数：5

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