201735-12-8Relevant academic research and scientific papers
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
Farghaly, Thoraya A.,Shawali, Ahmad Sami
scheme or table, p. 2700 - 2704 (2010/05/02)
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-l. The structures of such dyes were confirmed by spectroscopic and X-ray crystallographic analyses. The mechanism of formation of such compounds was also discussed.
Polyheterocyclic systems incorporating pyrazole, thiophene, thiazole, and thiadiazole moieties
Dawood, Kamal M.,Ragab, Eman A.,Farag, Ahmad M.
, p. 1151 - 1160 (2007/10/03)
A variety of polyheterocyclic ring systems having pyrazole, thiophene, thiazole and thiadiazole moieties are synthesized utilizing the reaction of sulfur-functionalized substrates with α-halocarbonyl compounds and hydrazonyl chlorides.
