2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine

Base Information

Chemical Name:2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine
CAS No.:1227147-15-0
Molecular Formula:C₂₁H₁₄F₃N₅O₂
Molecular Weight:425.37
Hs Code.:

Synonyms:2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine

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Chemical Property of 2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine

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Technology Process of 2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine

There total 5 articles about 2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine 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: 22.0%

: 1225380-84-6
2-bromo-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)-methyl]pyridine

: 1066-54-2
trimethylsilylacetylene

: 1227147-15-0
2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine

Guidance literature:: 2-bromo-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)-methyl]pyridine; trimethylsilylacetylene; With copper(l) iodide; triethylamine; bis-triphenylphosphine-palladium(II) chloride; at 100 ℃; for 16h; Inert atmosphere;

With sodium hydroxide; In tetrahydrofuran; at 20 ℃; for 4h;

Reference yield:

: N'-hydroxy-4-(trifluoromethoxy) benzene-1-carboximidamide

: 1227147-15-0
2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine

Guidance literature:: Multi-step reaction with 4 steps

1.1: 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; benzotriazol-1-ol / N,N-dimethyl-formamide / 7 h / 20 - 140 °C

2.1: potassium tert-butylate / tetrahydrofuran / 0 - 45 °C

3.1: trimethylsilyl bromide / propiononitrile / 2.17 h / 120 °C / Microwave irradiation

4.1: triethylamine; copper(l) iodide / bis-triphenylphosphine-palladium(II) chloride / 16 h / 100 °C / Inert atmosphere

4.2: 4 h / 20 °C

With copper(l) iodide; trimethylsilyl bromide; potassium tert-butylate; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; bis-triphenylphosphine-palladium(II) chloride; In tetrahydrofuran; N,N-dimethyl-formamide; propiononitrile;

Reference yield:

: 1085453-46-8
5-(5-methyl-1H-pyrazol-3-yl)-3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazole

: 1227147-15-0
2-Ethynyl-5-[(5-methyl-3-{3-[4-(trifluoromethoxy)phenyl]-1,2,4-oxadiazol-5-yl}-1H-pyrazol-1-yl)methyl]pyridine

Guidance literature:: Multi-step reaction with 3 steps

1.1: potassium tert-butylate / tetrahydrofuran / 0 - 45 °C

2.1: trimethylsilyl bromide / propiononitrile / 2.17 h / 120 °C / Microwave irradiation

3.1: triethylamine; copper(l) iodide / bis-triphenylphosphine-palladium(II) chloride / 16 h / 100 °C / Inert atmosphere

3.2: 4 h / 20 °C

With copper(l) iodide; trimethylsilyl bromide; potassium tert-butylate; triethylamine; bis-triphenylphosphine-palladium(II) chloride; In tetrahydrofuran; propiononitrile;