3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester

Base Information

• Chemical Name: 3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester
• CAS No.: 1076690-81-7
• Molecular Formula: C₁₄H₁₇N₃O₄
• Molecular Weight: 291.307
• Mol file: 1076690-81-7.mol

Synonyms:3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester

Chemical Property of 3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester

There total 1 articles about 3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester 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: 80.0%

di-tert-butyl dicarbonate (24424-99-5) + 3-(4-nitro-phenyl)-4,5-dihydro-1H-pyrazole (103753-04-4) → 3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester (1076690-81-7)

Guidance literature:

With dmap; In tetrahydrofuran; at 80 ℃; for 2h;

Reference yield: 94.0%

3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester (1076690-81-7) → 3-(4-amino-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester (1076690-82-8)

Guidance literature:

With hydrogen; palladium 10% on activated carbon; In methanol; at 20 ℃; for 17h;

Reference yield:

3-(4-nitro-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester (1076690-81-7) → 2-(2-chloro-4,5-dimethoxy-phenyl)-1-[3-(4-methylamino-phenyl)-4,5-dihydro-pyrazol-1-yl]-ethanone (1076690-71-5)

Guidance literature:

Multi-step reaction with 5 steps

1.1: hydrogen / palladium 10% on activated carbon / methanol / 17 h / 20 °C

2.1: sodium hydride / methanol / 5 h

2.2: 1 h / Heating / reflux

2.3: 18 h

3.1: pyridine / 18 h / 20 °C

4.1: hydrogenchloride / methanol / 1 h / 60 °C

5.1: oxalyl dichloride / N,N-dimethyl-formamide / dichloromethane / 1 h / 20 °C

5.2: 1 h / 20 °C

With pyridine; hydrogenchloride; oxalyl dichloride; hydrogen; sodium hydride; palladium 10% on activated carbon; N,N-dimethyl-formamide; In methanol; dichloromethane;

upstream raw materials:

di-tert-butyl dicarbonate

3-(4-nitro-phenyl)-4,5-dihydro-1H-pyrazole

Downstream raw materials:

3-(4-amino-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester

1-[4-(4,5-dihydro-1H-pyrazol-3-yl)-phenyl]-3-methyl-urea

3-[4-methylamino-phenyl]-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester

3-(4-methanesulfonylamino-phenyl)-4,5-dihydro-pyrazole-1-carboxylic acid tert-butyl ester