Synthetic Route of 1698-53-9, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1698-53-9, molcular formula is C10H6Cl2N2O, introducing its new discovery.
Synthesis of Pyrazolo<3,4-d>pyridazines from 5-(1-Methylhydrazino)-pyridazines by Means of the Vilsmeier-Haack Reaction
Reaction of 2-substituted 5-(1-methylhydrazino)-3(2H)-pyridazinones (2a-d) with dimethylformamide-phosphorus oxychloride afforded 5-substituted 1,5-dihydro-1-methyl-4H-pyrazolo<3,4-d>pyridazin-4-ones (3a-d) in good yields.However, concurrent formation of 5-substituted 2,5-dihydro-2-(2-substituted 1-chlorovinyl)-4H-pyrazolo<3,4-d>pyridazin-4-ones (6a-c, 12, 13) (minor products) and the 1-methyl-4H-derivatives (3a-c) (major ones) was observed, when starting with the corresponding 2-substituted 5-(2-acetyl-1-methylhydrazino)-3(2H)-pyridazinones (5a-c, 9, 10) under similar conditions.A plausible mechanism for the reaction is proposed.Keywords – pyridazine; pyrazolo<3,4-d>pyridazine; Vilsmeier reagent; tri-n-butyltin chloride; sodium borohydride; stereoisomer; photoisomerization; vinyl radical
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 1698-53-9 is helpful to your research. Synthetic Route of 1698-53-9
Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N3097 – PubChem