1,3,4-Trimethyl-1H-pyrazole-5-carboxylic acid

Base Information

• Chemical Name: 1,3,4-Trimethyl-1H-pyrazole-5-carboxylic acid
• CAS No.: 115294-67-2
• Molecular Formula: C7H10 N2 O2
• Molecular Weight: 154.17
• DSSTox Substance ID: DTXSID00590936
• Wikidata: Q82484554
• Mol file: 115294-67-2.mol

Synonyms:115294-67-2;1,3,4-Trimethyl-1H-pyrazole-5-carboxylic acid;1H-Pyrazole-5-carboxylic acid, 1,3,4-trimethyl-;2,4,5-trimethylpyrazole-3-carboxylic acid;1H-Pyrazole-5-carboxylicacid,1,3,4-trimethyl-(6CI,9CI);SCHEMBL4763456;DTXSID00590936;MFCD18809731;AKOS022905003;trimethyl-1H-pyrazole-5-carboxylic acid;LS-11018;TRIMETHYLPYRAZOLE-3-CARBOXYLIC ACID;DB-268043;CS-0094007;1,3,4-Trimethyl-1H-pyrazole-5-carboxylicacid;W-204846

Chemical Property of 1,3,4-Trimethyl-1H-pyrazole-5-carboxylic acid

Chemical Property:

• Boiling Point: 312.7±37.0 °C(Predicted)
• PKA: 0.76±0.50(Predicted)
• PSA: 55.12000
• Density: 1.24±0.1 g/cm3(Predicted)
• LogP: 0.73510
• XLogP3: 0.9
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 1
• Exact Mass: 154.074227566
• Heavy Atom Count: 11
• Complexity: 172

Purity/Quality:

97% ^*data from raw suppliers

1,3,4-Trimethyl-1H-pyrazole-5-carboxylicAcid ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CC1=C(N(N=C1C)C)C(=O)O

Technology Process of 1,3,4-Trimethyl-1H-pyrazole-5-carboxylic acid

There total 9 articles about 1,3,4-Trimethyl-1H-pyrazole-5-carboxylic acid 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: 100.0%

1-methyl-3-methyl-4-methyl-5-pyrazolecarboxylic acid ethyl ester (89202-90-4) → 1,3,4-trimethyl-1H-pyrazole-5-carboxylic acid (115294-67-2)

Guidance literature:

With sodium hydroxide; In ethanol; Heating;

DOI:10.1271/bbb1961.48.45

Reference yield:

ethyl 2,4-diketopentanoate (615-79-2) → 1,3,4-trimethyl-1H-pyrazole-5-carboxylic acid (115294-67-2)

Guidance literature:

Multi-step reaction with 5 steps

1: hydrazine hydrate / ethanol / -5 - 0 °C

2: N,N-dimethyl-formamide / 3 h / 60 °C

3: sulfuric acid; hydrogenchloride / 1,4-dioxane; water / 5 h / Reflux

4: 5%-palladium/activated carbon; hydrogen / ethanol; water / 6 h / 20 °C

5: sodium hydroxide / water / 4 h / 80 °C

With hydrogenchloride; hydrazine hydrate; sulfuric acid; 5%-palladium/activated carbon; hydrogen; sodium hydroxide; In 1,4-dioxane; ethanol; water; N,N-dimethyl-formamide;

DOI:10.1002/jhet.2682

Reference yield:

ethyl 1,3-dimethylpyrazole-5-carboxylate (5744-40-1) → 1,3,4-trimethyl-1H-pyrazole-5-carboxylic acid (115294-67-2)

Guidance literature:

Multi-step reaction with 3 steps

1: sulfuric acid; hydrogenchloride / 1,4-dioxane; water / 5 h / Reflux

2: 5%-palladium/activated carbon; hydrogen / ethanol; water / 6 h / 20 °C

3: sodium hydroxide / water / 4 h / 80 °C

With hydrogenchloride; sulfuric acid; 5%-palladium/activated carbon; hydrogen; sodium hydroxide; In 1,4-dioxane; ethanol; water;

DOI:10.1002/jhet.2682

upstream raw materials:

methyl 1,3,4-trimethylpyrazole-5-carboxylate

1,3,4-trimethyl-5-trichloromethyl-1H-pyrazole

1-methyl-3-methyl-4-methyl-5-pyrazolecarboxylic acid ethyl ester

Ethyl 3⁽⁵⁾,4-dimethylpyrazole-5⁽³⁾-carboxylate

Downstream raw materials:

2-(4-tert-butylphenyl)-3-hydroxy-3-(1,3,4-trimethyl-1H-pyrazol-5-yl)acrylonitrile

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