5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

Base Information

• Chemical Name: 5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid ethyl ester
• CAS No.: 1020106-59-5
• Molecular Formula: C₂₄H₂₂Cl₂N₂O₂S
• Molecular Weight: 473.423

Synonyms:5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

Chemical Property of 5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

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Technology Process of 5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

There total 2 articles about 5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-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: 95.0%

5-(5-bromothiophen-2-yl)-1-(2,4-dichloro-phenyl)-4-methyl-5-thiophen-2-yl-1H-pyrazole-3-carboxylic acid ethyl ester (1013649-25-6) + cyclopentylacetylene (930-51-8) → 5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid ethyl ester (1020106-59-5)

Guidance literature:

With bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; ethanolamine; In tetrahydrofuran; water; at 60 ℃; for 6h; Inert atmosphere;

DOI:10.1021/jm800066v

Reference yield: 88.0%

→ 5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid ethyl ester (1020106-59-5)

Guidance literature:

Reference yield: 96.0%

5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid ethyl ester (1020106-59-5) → 5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid (1020106-60-8)

Guidance literature:

With methanol; potassium hydroxide; at 20 ℃; Reflux; Inert atmosphere;

DOI:10.1021/jm800066v

upstream raw materials:

5-(5-bromothiophen-2-yl)-1-(2,4-dichloro-phenyl)-4-methyl-5-thiophen-2-yl-1H-pyrazole-3-carboxylic acid ethyl ester

cyclopentylacetylene

Downstream raw materials:

5-(5-(cyclopentylethynyl)thiophen-2-yl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid

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