anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide

Base Information

• Chemical Name: anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide
• CAS No.: 75526-82-8
• Molecular Formula: C₁₂H₈N₂O₂
• Molecular Weight: 212.208
• Mol file: 75526-82-8.mol

Synonyms:anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide

Chemical Property of anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide

There total 7 articles about anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide 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: 91.0%

(chlorocarbonyl)phenyl ketene (17118-70-6) + 1-trimethylsilylpyrazole (18156-75-7) → anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide (75526-82-8)

Guidance literature:

In acetonitrile; at 45 - 50 ℃; for 0.25h;

Reference yield: 82.0%

malonaldehydebis(dimethylacetal) (102-52-3) + 3,5-dihydroxy-4-phenylpyrazole (106367-54-8) → anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide (75526-82-8)

Guidance literature:

With hydrogenchloride; In tetrahydrofuran; for 1h; Ambient temperature;

DOI:10.1021/jo00341a023

Reference yield: 82.0%

NH-pyrazole (288-13-1) + 2-Phenyl-propanedioyl dichloride (37818-48-7) → anhydro-1-hydroxy-3-oxo-2-phenylpyrazolo<1,2-a>pyrazolium hydroxide (75526-82-8)

Guidance literature:

With triethylamine; In ethyl acetate; for 0.166667h;

upstream raw materials:

NH-pyrazole

(chlorocarbonyl)phenyl ketene

2-Phenyl-propanedioyl dichloride

diethyl 2-phenylmalonate

Downstream raw materials:

NH-pyrazole

α-phenylmalonmorpholide

anhydro-2-(4-bromophenyl)-1-hydroxy-3-oxopyrazolo<1,2-a>pyrazolium hydroxide

anhydro-2-(2-nitrophenyl)-1-hydroxy-3-oxopyrazolo<1,2-a>pyrazolium hydroxide