57389-73-8

Upstream product

• 57-14-7 N,N-Dimethylhydrazine 
• 134-81-6 benzil 
• 20451-28-9 1,2-diphenyl-3-piperidin-1-yl-propan-1-one 
• 100-52-7 benzaldehyde 
• 20743-49-1 2-methyl-5-phenyl-2H-tetrazole 
• 13466-29-0 1-benzylidene-2-methylhydrazine 
• 103-26-4 methyl cinnamate 
• 90145-29-2 1-Methyl-3,4-diphenylpyrazol-5-carbonsaeure-methylester 
• 90145-13-4 N'-<α-bromobenzylidene>-N-methylhydrazinium bromide 
• 105592-65-2 1-methyl-1-phenacylhydrazine ethylene glycol ketal 
• 6939-12-4 N-methylsydnone 
• 501-65-5 diphenyl acetylene 
• 536-74-3 phenylacetylene 
• 109277-26-1 N-Methyl-N-(2-phenyl-[1,3]dioxolan-2-ylmethyl)-N'-[1-phenyl-meth-(E)-ylidene]-hydrazine 

Downstream Products

• 126872-45-5 cis-{Pd(1-methyl-3,4-diphenylpyrazole)2Cl₂} 
• 126756-91-0 ((1-methyl-3,4-diphenylpyrazole)H){AuCl₄} 
• 98320-97-9 dichloronickel-bis(1-methyl-3,4-diphenylpyrazole) 
• 98292-62-7 dichloromanganese-bis(1-methyl-3,4-diphenylpyrazole) 
• 98292-75-2 dinitratozinc-bis(1-methyl-3,4-diphenylpyrazole) 
• 98292-77-4 dinitratocadmium-bis(1-methyl-3,4-diphenylpyrazole) 
• 98292-63-8 dibromomanganese-bis(1-methyl-3,4-diphenylpyrazole) 
• 126756-90-9 cis-(Pt(1-methyl-3,4-diphenylpyrazole)2Cl₂) 
• 1125879-94-8 1-methyl-3,4-di-phenyl-5-(3-pyridyl)-1H-pyrazole 

Relevant academic research and scientific papers

C-H bonds as ubiquitous functionality: A general approach to complex arylated pyrazoles via sequential regioselective C-arylation and N-alkylation enabled by SEM-group transposition

Pyrazoles are important azole heteroarenes frequently found in pharmaceuticals and protein ligands, and there has been a growing interest in newsynthetic methods for their preparation. We report the first catalytic intermolecular C-H arylation of pyrazole

FORMATION OF PYRAZOLES AND OF IMIDAZOLES FROM PHENACYL KETAL HYDRAZONES OF ALDEHYDES

The cyclization of phenacyl ethylene ketal (pek) hydrazones of glyoxals, benzaldehyde and acetaldehyde to pyrazoles is described; in the case of the hydrazones of benzaldehyde and acetaldehyde, the corresponding imidazoles are also formed.A mechanism is suggested for the formation of the imidazoles.

4,5-DIPHENYLIMIDAZOLES FROM THE CYCLIZATION OF BENZIL N-ALKYLMONOHYDRAZONES

The thermal cyclization of monodisubstituted hydrazones (1) affords the corresponding N-substituted-4,5-diphenylimidazoles in good to excellent yields; possible mechanisms for this unusual cyclization are presented.

THE UNUSUAL CYCLIZATION OF BENZIL MONOHYDRAZONES TO 4,5-DIPHENYLIMIDAZOLES

Benzil monodisubstituted hydrazones (2) have been shown to undergo cyclodehydration to the corresponding imidazoles (10) and not to pyrazoles as previously reported.

1,3-Dipolar Cycloadditions, 91. The Chemistry of N-Methyl-C-phenylnitrilimine

The treatment of N'--N-methylhydrazinium bromide, accessible by bromination of benzaldehyde-N-methylhydrazone, with triethylamine furnishes the title compound; this method is superior to the thermolysis and photolysis of 2-methyl-5-phe