128457-01-2

Upstream product

• 98767-49-8 5-(N-Methyl-hydrazino)-2-phenyl-2H-pyridazin-3-one 
• 762-42-5 dimethyl acetylenedicarboxylate 
• 128457-11-4 4-Bromo-5-(N-methyl-hydrazino)-2-phenyl-2H-pyridazin-3-one 
• 14305-08-9 4,5-dibromo-2-phenylpyridazin-3(2H)-one 

Relevant academic research and scientific papers

Novel Heterocyclization of Hydrazinopyridazinones with Dimethyl Acetylenedicarboxylate with Dehydrogenation and Rearrangement

5-Hydrazinopyridazin-3(2H)-ones 1 reacted with dimethyl acetylenedicarboxylate 2 to give 4,6-dihydropyridazinopyridazin-5-(1H)-ones 3 by cyclization with dehydrogenation.On the other hand, the reaction of 4-bromo-5-hydrazino- and 5-bromo-4-hydrazin

Novel Cyclization and Rearangement to 1,4-Dihydropyridazinopyridazinones

1,4-Dihydropyridazinopyridazinones were prepared by a novel one-pot cyclization and dehydrogenation from hydrazinopyridazinones and dimethyl acetylenedicarboxylate.