68615-46-3

Upstream product

• 68901-70-2 3-methyl-4-(4-nitrobenzylidene)-1-phenyl-1H-pyrazol-5(4H)-one 
• 555-16-8 4-nitrobenzaldehdye 
• 22717-42-6 3-methyl-1-phenyl-1H-pyrazole-5(4H)-thione 

Downstream Products

• 96128-69-7 5-Methyl-4-[(3-methyl-1-phenyl-5-thioxo-4,5-dihydro-1H-pyrazol-4-yl)-(4-nitro-phenyl)-methyl]-2,4-dihydro-pyrazol-3-one 
• 96128-62-0 5-Methyl-4-[(3-methyl-1-phenyl-5-thioxo-4,5-dihydro-1H-pyrazol-4-yl)-(4-nitro-phenyl)-methyl]-2-phenyl-2,4-dihydro-pyrazol-3-one 

Relevant academic research and scientific papers

STUDIES ON THE VILSMEIER-HAACK REACTION. PART III - REACTION OF 3-METHYL-1-PHENYL-4-ARYLIDENE-2-PYRAZOLIN-5-THIONE

The 3-methyl group in 3-methyl pyrazolthione derivatives (2,3) has been found to undergo diformylation by Vilsmeier reagent to give the aminoacroleins (4,5).Treatment of 4,5 with some reagents affords the related 1-phenyl-4-arylidene-5-pyrazolthione deriv