91758-20-2

Upstream product

• 91757-96-9 5-[1-Dimethylamino-meth-(E)-ylidene]-1-phenyl-1,5,6,7-tetrahydro-indazol-4-one 
• 124-63-0 methanesulfonyl chloride 
• 91757-91-4 1,5,6,7-tetrahydro-5-hydroxymethylene-1-phenyl-4H-indazol-4-one 
• 14823-31-5 4-Oxo-1-phenyl-4,5,6,7-tetrahydrobenopyrazole 

Relevant academic research and scientific papers

Reaction of Dichloroketene and Sulfene with N,N-Disubstituted α-Aminomethyleneketones. Synthesis of Pyranoindazole and 1,2-Oxathiinoindazole Derivatives

The polar 1,4-cycloaddition of dichloroketene to N,N-disubstituted (E)-5-aminomethylene-1,5,6,7-tetrahydro-(1-methyl)(1-phenyl)-4H-indazol-4-ones V, prepared from 1,5,6,7-tetrahydro-(1-methyl)(1-phenyl)-4H-indazol-4-ones via the 5-hydroxymethylene derivat