3-Bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid ethyl ester

Base Information

• Chemical Name: 3-Bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid ethyl ester
• CAS No.: 1370287-43-6
• Molecular Formula: C₁₀H₁₀BrN₃O₂
• Molecular Weight: 284.112
• Hs Code.: 2933990090
• Mol file: 1370287-43-6.mol

Synonyms:3-Bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid ethyl ester

Chemical Property of 3-Bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid ethyl ester

Chemical Property:

• PKA: -1.78±0.40(Predicted)
• PSA: 56.49000
• Density: 1.65
• LogP: 1.97690

Purity/Quality:

97% ^*data from raw suppliers

Ethyl3-bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 3-Bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid ethyl ester

There total 3 articles about 3-Bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid ethyl 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: 83.0%

Ethyl 7-methylpyrazolo<1,5-a>pyrimidine-6-carboxylate (90840-54-3) → ethyl 3-bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate (1370287-43-6)

Guidance literature:

With N-Bromosuccinimide; In dichloromethane; at 0 - 20 ℃; for 17.5h;

DOI:10.1021/jm300164q

Reference yield:

ethyl acetoacetate (141-97-9) → ethyl 3-bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate (1370287-43-6)

Guidance literature:

Multi-step reaction with 3 steps

1: acetic anhydride / Reflux

2: ethanol / 3 h / Reflux

3: N-Bromosuccinimide / dichloromethane / 17.5 h / 0 - 20 °C

With N-Bromosuccinimide; acetic anhydride; In ethanol; dichloromethane;

DOI:10.1021/jm300164q

Reference yield:

2-ethoxymethylene-3-oxobutanoic acid ethyl ester (3788-94-1) → ethyl 3-bromo-7-methylpyrazolo[1,5-a]pyrimidine-6-carboxylate (1370287-43-6)

Guidance literature:

Multi-step reaction with 2 steps

1: ethanol / 3 h / Reflux

2: N-Bromosuccinimide / dichloromethane / 17.5 h / 0 - 20 °C

With N-Bromosuccinimide; In ethanol; dichloromethane;

DOI:10.1021/jm300164q

upstream raw materials:

ethyl acetoacetate

2-ethoxymethylene-3-oxobutanoic acid ethyl ester

Ethyl 7-methylpyrazolo<1,5-a>pyrimidine-6-carboxylate

Downstream raw materials:

3-bromo-7-methyl-N-(2-phenoxyethyl)pyrazolo[1,5-a]pyrimidine-6-carboxamide

7-Methyl-N-(2-phenoxyethyl)-3-(p-tolyl)pyrazolo[1,5-a]pyrimidine-6-carboxamide

7-methyl-N-(2-phenoxyethyl)-3-(m-tolyl)pyrazolo[1,5-a]pyrimidine-6-carboxamide

7-methyl-N-(2-phenoxyethyl)-3-(o-tolyl)pyrazolo[1,5-a]pyrimidine-6-carboxamide

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