4-ethynyl-1-Methyl-1-H-pyrazole

Base Information

• Chemical Name: 4-ethynyl-1-Methyl-1-H-pyrazole
• CAS No.: 39806-89-8
• Molecular Formula: C6H6N2
• Molecular Weight: 106.127
• Hs Code.: 2933199090
• Mol file: 39806-89-8.mol

Synonyms:4-ethynyl-1-methylpyrazole;

Chemical Property of 4-ethynyl-1-Methyl-1-H-pyrazole

Chemical Property:

• Boiling Point: 181.7±13.0 °C(Predicted)
• PKA: 0?+-.0.10(Predicted)
• PSA: 17.82000
• Density: 0.93±0.1 g/cm3(Predicted)
• LogP: 0.40140
• Storage Temp.: 2-8°C

Purity/Quality:

99%, ^*data from raw suppliers

4-Ethynyl-1-methyl-1H-pyrazole ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 4-ethynyl-1-Methyl-1-H-pyrazole

There total 5 articles about 4-ethynyl-1-Methyl-1-H-pyrazole 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: 94.4%

1-methyl-4-((trimethylsilyl)ethynyl)-1H-pyrazole (1201657-09-1) → 4-ethynyl-1-methyl-1-H-pyrazole (39806-89-8)

Guidance literature:

With potassium hydroxide; In tert-butyl methyl ether; water; at 15 - 25 ℃; for 4h; Reagent/catalyst; Solvent; Temperature; Large scale;

Reference yield: 91.0%

methyl iodide (74-88-4) → 4-ethynyl-1-methyl-1-H-pyrazole (39806-89-8)

Guidance literature:

4-ethynyl-1H-pyrazole; With sodium hydride; In N,N-dimethyl-formamide; at 0 ℃; for 1h;

methyl iodide; In N,N-dimethyl-formamide; at 0 - 20 ℃; for 1h;

Reference yield:

4-iodo-1-methyl-1H-pyrazole (39806-90-1) + trimethylsilylacetylene (1066-54-2) → 4-ethynyl-1-methyl-1-H-pyrazole (39806-89-8)

Guidance literature:

4-iodo-1-methyl-1H-pyrazole; trimethylsilylacetylene; With bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; triethylamine; In N,N-dimethyl-formamide; at 25 ℃; for 12h; Inert atmosphere;

With potassium carbonate; In methanol; at 25 ℃; for 12h; Inert atmosphere;

upstream raw materials:

methyl iodide

1-methyl-4-((trimethylsilyl)ethynyl)-1H-pyrazole

4-ethynyl-1H-pyrazole

4-iodo-1-methyl-1H-pyrazole

Downstream raw materials:

3,5-dimethoxy-4-(4-methoxy-benzyloxy)-2-(1-methyl-1H-pyrazol-4-ylethynyl)-pyridine

tert-butyl 3-chloro-6-(2-chloro-4-(dimethylcarbamoyl)phenylamino)-2-(1-methyl-1H-pyrazol-4-yl)-1H-pyrrolo[3,2-c]pyridine-1-carboxylate

1-methyl-4-phenyl-1H-pyrazole

4-(2,4-dimethoxy-3-fluoro-phenylethynyl)-1-methyl-1H-pyrazole

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