(E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one

Base Information

• Chemical Name: (E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one
• CAS No.: 897030-45-4
• Molecular Formula: C₁₇H₁₃BrN₂O
• Molecular Weight: 341.207
• Mol file: 897030-45-4.mol

Synonyms:(E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one

Chemical Property of (E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one

There total 2 articles about (E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 81.0%

4-bromo-benzaldehyde (1122-91-4) + edaravone (89-25-8) → (E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (897030-45-4)

Guidance literature:

With acetic acid; In ethanol; Reflux;

DOI:10.1016/j.jorganchem.2017.11.012

Reference yield:

1-(5-hydroxy-3-methyl-1-phenyl-4-pyrazyl)-1-(3'-indolyl)-1-(4''-bromophenyl)methane (184534-56-3) → (E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (897030-45-4)

Guidance literature:

In methanol; Equilibrium constant; uv spectra measurements;

DOI:10.1002/jhet.5570360320

Reference yield: 84.0%

1,3-cylohexanedione (504-02-9) + (E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (897030-45-4) → (2R,3S)-3-(4-bromophenyl)-3′-methyl-1′-phenyl-3,5,6,7-tetrahydro-4H-spiro[benzofuran-2,4′-pyrazole]-4,5′(1′H)-dione + 3-(4-bromophenyl)-3′-methyl-1′-phenyl-3,5,6,7-tetrahydro-4H-spiro[benzofuran-2,4′-pyrazole]-4,5′(1′H)-dione

Guidance literature:

1,3-cylohexanedione; (E)-4-(4-bromobenzylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one; With C₂₀H₂₁F₆N₃O₂; In dichloromethane; at 60 ℃; for 0.1h;

With sodium carbonate; potassium iodide; In tetrahydrofuran; at 20 ℃; for 48h;

upstream raw materials:

1-(5-hydroxy-3-methyl-1-phenyl-4-pyrazyl)-1-(3'-indolyl)-1-(4''-bromophenyl)methane

4-bromo-benzaldehyde

edaravone

Downstream raw materials:

1-(5-hydroxy-3-methyl-1-phenyl-4-pyrazyl)-1-(3'-indolyl)-1-(4''-bromophenyl)methane