127896-77-9

Upstream product

• 99347-21-4 5-amino-1-methyl-1H-pyrazole-4-carboxhydrazide 
• 100-52-7 benzaldehyde 

Downstream Products

• 136397-28-9 5-benzylideneamino-3,4-dihydro-7-methyl-7H-pyrazolo<3,4-d>-1,2,3-triazi-4-one 
• 136397-25-6 5-benzylideneamino-4,5-dihydro-1,6-dimethyl-1H-pyrazolo<3,4-d>pyrimidin-4-one 
• 136397-24-5 5-benzylideneamino-4,5-dihydro-1-methyl-1H-pyrazolo<3,4-d>pyrimidin-4-one 

Relevant academic research and scientific papers

NOVEL 4,5-DIHYDROPYRAZOLOPYRIMIDIN-4-ONES AND 3,4-DIHYDROPYRAZOLO-1,2,3-TRIAZIN-4-ONES

β-benzylidene 3- and 5-amino-1-methyl-1H-pyrazole-4-carboxhydrazides 3 and 4 readily react with orthoesters to yield the 4,5-dihydropyrazolopyrimidin-4-ones 5-8.Syntheses of 3,4-dihydropyrazolo-1,2,3-triazin-4-ones 9, 10, 13 and 14 were achi

SYNTHESIS OF IMINES FROM N-(1-HALOGENOALKYL)HETEROARYLIUM SALTS

A comparison is established for the reactivity of benzaldehyde, N-(1-chlorobenzyl)pyridinium chloride or N-(1-chlorobenzyl)pyrimidinium chloride with several poorly nucleophilic and/or poorly soluble primary amines under mild experimental conditions.