87780-10-7

Upstream product

• 79222-76-7 2-benzyl-6-phenylpyridazin-3(2H)-one 
• 100-39-0 benzyl bromide 
• 2166-31-6 6-phenylpyridazin-3(2H)-one 

Downstream Products

• 134142-28-2 5-benzyl-3,3-dimethyl-7-phenyl-3H-pyrazolo<3.4-d>pyridazine-4(5H)-thione 
• 87780-03-8 2-[2-Benzyl-6-phenyl-2H-pyridazin-(3E)-ylidene]-1-(4-bromo-phenyl)-ethanone 
• 87779-98-4 1-Benzyl-6-[2-(4-bromo-phenyl)-2-oxo-ethylsulfanyl]-3-phenyl-pyridazin-1-ium; bromide 

Relevant academic research and scientific papers

1,3-Dipolar Cycloaddition of 2-Diazoalkanes to Pyridazin-3(2H)-one Derivatives. The Formation of 3H-Pyrazolopyridazin-4(5H)-one and 3H-Pyrazolopyridazin-7(6H)-one Derivatives

1,3-Dipolar cycloadditions of diazoalkanes to pyridazin-3(2H)-ones 1-7 and pyridazin-3(2H)-thiones 8 and 9 are regioselective producing 3H-pyrazolopyridazin-4(5H)-ones 15-19, 27-29 and 34-38 as the major products.In some instances, the isomeric 3H-pyrazolopyridazin-7(6H)-ones, such as 20 and 23 were isolated as the minor products.From 3 and 6 the primary 3a,7a-dihydro cycloadducts 25 and 26, and rearranged 1,2-dihydro intermediate 31 were isolated.From 10 and 1-diazoindane the isomeric exo- and endo-spiro products 39 and 40 were formed.

SYNTHESE D'ACYL-ALKYLIDENE-3 DIHYDROPYRIDAZINES PAR UNE REACTION D'EXTRUSION DE SOUFRE

Des acyl-alkylidene-3 dihydropyridazines sont obtenues par une reaction mettant en jeu l'extrusion du soufre des acyl-alkylthio-3 pyridazines N-alkylees correspondantes.Cette reaction d'extrusion n'a pas lieu sur des cycles pyridaziniques non alkyles sur