7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine

Base Information

• Chemical Name: 7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine
• CAS No.: 328554-17-2
• Molecular Formula: C₂₁H₁₇ClFN₃O₂S
• Molecular Weight: 429.902

Synonyms:7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine

Chemical Property of 7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine

Chemical Property:

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Technology Process of 7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine

There total 5 articles about 7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine 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: 88.0%

3-(4-fluorophenyl)-5,6-dimethyl-2-(4-methylsulfonylphenyl)pyrazolo[1,5-a]pyrimidin-7-ol → 7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine (328554-17-2)

Guidance literature:

With trichlorophosphate; for 1h; Heating;

DOI:10.1021/jm0009383

Reference yield:

2-acetylpropanoic acid ethyl ester (609-14-3) → 7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine (328554-17-2)

Guidance literature:

Multi-step reaction with 2 steps

1: toluene / 2 h / 111 °C

2: 88 percent / POCl₃ / 1 h / Heating

With trichlorophosphate; In toluene;

DOI:10.1021/jm0009383

Reference yield:

2-(4-fluorophenyl)-1-(4-(methylsulfonyl)phenyl)ethanone (163304-90-3) → 7-chloro-3-(4-fluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-5,6-dimethyl-pyrazolo[1,5-a]pyrimidine (328554-17-2)

Guidance literature:

Multi-step reaction with 4 steps

1.1: POCl₃ / CHCl₃ / 0.25 h / 0 °C

1.2: CHCl₃ / 18 h / 80 °C

1.3: NH₂OH*HCl / dimethylformamide / 4 h / 20 °C

2.1: 52 percent / NH₂NH₂*H₂O / ethanol / 18 h / 78 °C

3.1: toluene / 2 h / 111 °C

4.1: 88 percent / POCl₃ / 1 h / Heating

With hydrazine hydrate; trichlorophosphate; In ethanol; chloroform; toluene;

DOI:10.1021/jm0009383

upstream raw materials:

2-acetylpropanoic acid ethyl ester

2-(4-fluorophenyl)-1-(4-(methylsulfonyl)phenyl)ethanone

3-amino-4-(4-fluorophenyl)-5-(4-methylsulfonylphenyl)pyrazole

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