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1,3-Dipolar cycloaddition of 2-diazopropane to imidazo[1,2-b]pyridazine derivatives. The synthesis of imidazo[1,2-b]pyrazolo[4,3-d]pyridazines derivatives of a novel heterocyclic system

✍ Scribed by Stanovnik, Branko; Kupper, Marko; Ti?ler, Miha; Leban, Ivan; Goli?, Ljubo


Book ID
123621718
Publisher
The Royal Society of Chemistry
Year
1984
Tongue
English
Weight
163 KB
Volume
5
Category
Article
ISSN
0022-4936

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pyridazine derivatives 9a -d were synthesized by two pathways: thermal electrocyclic reaction of 3-alkenylimidazopyridine-2-oximes 10 and direct condensation of ethyl glycinate (or hydrazine) with 2,3-dicarbonylimidazo[1,2-a]pyridines 11.