229959-72-2

Upstream product

• 536-74-3 phenylacetylene 
• 60-34-4 methylhydrazine 
• 122-78-1 phenylacetaldehyde 

Downstream Products

• 1608493-77-1 3-Benzyl-1-methyl-4-nitro-5-phenyl-1H-pyrazole 
• 1608493-78-2 3-Benzyl-4-chloro-1-methyl-5-phenyl-1H-pyrazole 
• 1270943-00-4 4-chloro-3-(4-methoxyphenyl)-1-methyl-5-phenyl-1H-pyrazole 
• 1608493-81-7 3-(4-methoxyphenyl)-1-methyl-4-nitro-5-phenyl-1H-pyrazole 

Relevant academic research and scientific papers

Regioselective synthesis of 4-nitro- or 4-chloro-tetrasubstituted pyrazoles from hydrazones and β-halo-β-nitrostyrenes

We report an acid-catalyzed cycloaddition reaction of hydrazones with β-bromo- or β-chloro-β-nitrostyrenes for the regioselective synthesis of 4-nitro- or 4-chloro-tetrasubstituted pyrazoles. Arising from a common 4-halo-4-nitropyrazolidine intermediate,

Intermolecular Cope-type hydroamination of alkynes using hydrazines

Metal-free, intermolecular hydroaminations are performed upon heating aryl acetylenes and MeNHNH2 at 140°C, with preferential formation of the linear, "anti-Markovnikov" hydrazones. The Royal Society of Chemistry.