2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine

Base Information

• Chemical Name: 2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine
• CAS No.: 128039-37-2
• Molecular Formula: C₁₅H₁₅N₃S₂
• Molecular Weight: 301.436
• Mol file: 128039-37-2.mol

Synonyms:2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine

Chemical Property of 2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine

There total 2 articles about 2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<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: 80.0%

4,4-bis(methylthio)but-3-en-2-one (17649-86-4) + 3-amino-5-methylthio-4-phenylpyrazole (128039-32-7) → 2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine (128039-37-2)

Guidance literature:

With piperidine; In water; acetic acid; Heating;

DOI:10.1016/S0040-4020(01)85438-7

Reference yield:

ββ-bis(methylmercapto)-α-phenylacrylonitrile (29866-38-4) → 2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine (128039-37-2)

Guidance literature:

Multi-step reaction with 2 steps

1: 90 percent / hydrazine hydrate / ethanol / Heating

2: 80 percent / piperidine / acetic acid; H₂O / Heating

With piperidine; hydrazine hydrate; In ethanol; water; acetic acid;

DOI:10.1016/S0040-4020(01)85438-7

Reference yield: 79.0%

2,5-bis(methylthio)-7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine (128039-37-2) → 7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine (128039-63-4)

Guidance literature:

With W₂ Raney nickel; In methanol; Ambient temperature;

DOI:10.1016/S0040-4020(01)85438-7

upstream raw materials:

4,4-bis(methylthio)but-3-en-2-one

3-amino-5-methylthio-4-phenylpyrazole

ββ-bis(methylmercapto)-α-phenylacrylonitrile

Downstream raw materials:

7-methyl-3-phenylpyrazolo<1,5-a>pyrimidine