3,5-dibromo-1-methyl-4-nitro-1H-pyrazole

Base Information

• Chemical Name: 3,5-dibromo-1-methyl-4-nitro-1H-pyrazole
• CAS No.: 155600-99-0
• Molecular Formula: C4H3Br2N3O2
• Molecular Weight: 284.89352
• Hs Code.: 2933199090
• Mol file: 155600-99-0.mol

Synonyms:3,5-dibromo-1-methyl-4-nitro-1H-pyrazole

Chemical Property of 3,5-dibromo-1-methyl-4-nitro-1H-pyrazole

Chemical Property:

• Melting Point: 153-155°
• Boiling Point: 279.1±35.0 °C(Predicted)
• PKA: -5.83±0.10(Predicted)
• PSA: 63.64000
• Density: 2.51±0.1 g/cm3(Predicted)
• LogP: 2.37650
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C

Purity/Quality:

97% ^*data from raw suppliers

3,5-Dibromo-1-methyl-4-nitro-1H-pyrazole >95% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 3,5-dibromo-1-methyl-4-nitro-1H-pyrazole

There total 3 articles about 3,5-dibromo-1-methyl-4-nitro-1H-pyrazole 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: 72.6%

3,5-dibromo-4-nitro-1H-pyrazole (104599-36-2) → 3,5-di-bromo-1-methyl-4-nitropyrazole (155600-99-0)

Guidance literature:

With CH₃I; In N,N-dimethyl-formamide;

Reference yield:

1-bromo-4-nitropyrazole + dimethyl sulfate (77-78-1) → 3,5-di-bromo-1-methyl-4-nitropyrazole (155600-99-0) + 3-bromo-1-methyl-4-nitro-1H-pyrazole (89607-15-8) + 5-bromo-1-methyl-4-nitropyrazole (89607-13-6) + 1-methyl-4-nitropyrazole (3994-50-1,82208-47-7)

Guidance literature:

1-bromo-4-nitropyrazole; With sodium hydrogencarbonate; In water; at 20 - 25 ℃; for 72h;

dimethyl sulfate; With potassium carbonate; In acetonitrile; for 24h; Reflux;

DOI:10.1007/s11172-012-0030-9

Reference yield:

→ 3,5-di-bromo-1-methyl-4-nitropyrazole (155600-99-0)

Guidance literature:

upstream raw materials:

3,5-dibromo-4-nitro-1H-pyrazole

dimethyl sulfate

Downstream raw materials:

N-benzyl-3-bromo-1-methyl-4-nitro-1H-pyrazol-5-amine

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