1H-pyrazole-4-carbohydrazide

Base Information

• Chemical Name: 1H-pyrazole-4-carbohydrazide
• CAS No.: 87551-45-9
• Molecular Formula: C₄H₆N₄O
• Molecular Weight: 126.118
• Hs Code.: 2933199090
• European Community (EC) Number: 820-791-3
• Mol file: 87551-45-9.mol

Synonyms:1H-pyrazole-4-carbohydrazide;87551-45-9;SCHEMBL3633530;MFCD12139713;AKOS005747199;LS-05083;FT-0755833;EN300-313252;A923025

Chemical Property of 1H-pyrazole-4-carbohydrazide

Chemical Property:

• PSA: 83.80000
• LogP: 0.10440
• XLogP3: -1.3
• Hydrogen Bond Donor Count: 3
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 1
• Exact Mass: 126.05416083
• Heavy Atom Count: 9
• Complexity: 115

Purity/Quality:

97% ^*data from raw suppliers

1H-Pyrazole-4-carbohydrazide ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C1=C(C=NN1)C(=O)NN

Technology Process of 1H-pyrazole-4-carbohydrazide

There total 5 articles about 1H-pyrazole-4-carbohydrazide 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: 85.0%

1,3-Dimethyl-1-(1H-pyrazole-4-carbonyl)-urea (80981-25-5) → 1H-pyrazole-4-carbohydrazide (87551-45-9)

Guidance literature:

With hydrazine hydrate; at 100 ℃; for 3h;

Reference yield: 11.0%

1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidine-5-carbaldehyde (4869-46-9) → 1,3-dimethyluracil (874-14-6,156398-76-4) + 1H-pyrazole-4-carbohydrazide (87551-45-9)

Guidance literature:

With hydrazine hydrate; at 100 ℃; for 3h;

Reference yield:

1H-pyrazole-4-carboxylic acid (37718-11-9) → 1H-pyrazole-4-carbohydrazide (87551-45-9)

Guidance literature:

1H-pyrazole-4-carboxylic acid; With 1,1'-carbonyldiimidazole; In tetrahydrofuran; at 23 ℃; for 2h; Inert atmosphere;

With hydrazine; In tetrahydrofuran; at 23 ℃; for 16h;

DOI:10.1016/j.bmcl.2013.11.081

upstream raw materials:

1,3-Dimethyl-1-(1H-pyrazole-4-carbonyl)-urea

1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidine-5-carbaldehyde

1H-pyrazole-4-carboxylic acid

methyl pyrazole-4-carboxylate

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