91736-89-9

Upstream product

• 1698-53-9 4,5-dichloro-1-phenylpyridazin-6-one 
• 100-46-9 benzylamine 

Downstream Products

• 136353-54-3 3-Benzyl-2-[(E)-4-ethoxy-phenylimino]-5-phenyl-3,5-dihydro-2H-thiazolo[4,5-d]pyridazin-4-one 
• 136353-52-1 3-Benzyl-2-[(E)-4-chloro-phenylimino]-5-phenyl-3,5-dihydro-2H-thiazolo[4,5-d]pyridazin-4-one 
• 91736-92-4 2-phenyl-4-benzylamino-5-mercapto-3(2H)-pyridazinone 
• 91736-86-6 10-benzyl-2,7-diphenyl-10H-dipyridazino<4,5-b:4',5'-e><1,4>thiazine-1,6(2H,7H)-dione 
• 91736-95-7 N-benzyl-N,N-(2,2'-diphenyl-3,3'-dioxo-2,3,2',3'-tetrahydro-4,5')dipyridazinylamine 
• 91757-08-3 2,6-diphenyl-9-benzyl-9H-dipyridazino<4,5-b:4',5'-d>pyrrole-1,5(2H,6H)-dione 
• 91364-80-6 5-(2-phenyl-4-benzylamino-2,3-dihydro-3-oxo-pyridazinyl) 5'-(2'-phenyl-4'-chloro-2',3'-dihydro-3'-oxo-pyridazinyl) sulfide 
• 136353-53-2 3-Benzyl-5-phenyl-2-[(E)-p-tolylimino]-3,5-dihydro-2H-thiazolo[4,5-d]pyridazin-4-one 

Relevant academic research and scientific papers

Kinetic and Theoretic Aspects of Regiochemistry in the Reaction of 4,5-Dihalo-3(2H)-pyridazinones with Benzylamines

Regioselectivity of nucleophilic substitution reactions of 4,5-dihalo-3(2H)-pyridazinones (1a-d) with benzylamines was studied under different conditions.Second-order kinetics were obtained for reactions of 1a with benzylamine in ethanol-d6 and toluene-d8 as well.Experimental results obtained were interpreted on the bases of Klopman-Salem equation and analyses of the reaction paths.

Conversion of Dipyridazinothiazines into Dipyridazinopyrroles through a Base-Induced Extrusion of Sulfur

A novel ring contraction for the conversion of 2,7-disubstituted 10H-dipyridazinothiazine-1,6-(2H,7H)-diones (4'a-c) into the corresponding 2,6-disubstituted 9H-dipyridazinopyrrole-1,5(2H,6H)-diones (7'a-c), through a ba