Triethylamine → N-(4-(phenylethynyl)-1H-pyrazol-5-yl)acetamide

HRID 1615703ノート

反応式

HRID 1615703 の反応式
I[C:2]1[CH:3]=[N:4][NH:5][C:6]=1[NH:7][C:8](=[O:10])[CH3:9].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(N(CC)CC)C.[C:37]1([C:43]#[CH:44])[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1>[Pd].C(O)C.[Cu]I>[C:37]1([C:43]#[C:44][C:2]2[CH:3]=[N:4][NH:5][C:6]=2[NH:7][C:8](=[O:10])[CH3:9])[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1

参加物

8

反応物 4

HCID 8471TriethylamineHCID 10821PhenylacetyleneHCID 11776TriphenylphosphineHCID 86717260N-(4-iodo-1H-pyrazol-5-yl)acetamide

生成物 1

HCID 86717261N-(4-(phenylethynyl)-1H-pyrazol-5-yl)acetamide収率 65.1%

試薬・触媒・溶媒 3

HCID 23938Palladium触媒HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 702Ethanol溶媒

実験手順

Nitrogen was bubbled through a suspension of N-(4-iodo-1H-pyrazol-5-yl)acetamide (30 g, 120 mmol), 10% palladium on carbon (50% water, 7.4 g, 3 mmol), copper(I) iodide (1.14 g, 6 mmol), triphenylphosphine (6.3 g, 24 mmol) and triethylamine (50 mL, 360 mmol) in ethanol (600 mL) for 20 min. Phenyl acetylene (18.3 g, 179 mmol) was added and nitrogen bubbled through the mixture for a further 25 min. The reaction mixture was then heated and stirred under reflux conditions in an atmosphere of nitrogen for 3 d and cooled to room temperature. The reaction mixture was filtered through celite and the filtrate was concentrated in vacuo. The residue was purified by column chromatography (silica gel, isohexane/ethyl acetate 9:1 to 0:1) yielding the title compound as a solid (17.6 g).

後処理

  1. customnitrogen bubbled through the mixture for a further 25 min
  2. temperatureThe reaction mixture was then heated
  3. filtrationThe reaction mixture was filtered through celite
  4. concentrationthe filtrate was concentrated in vacuo
  5. customThe residue was purified by column chromatography (silica gel, isohexane/ethyl acetate 9:1 to 0:1)

出典と根拠

ORDレコード
ord-fd4b46c53f5147b5ba9ebd84a4e3d8ba
出典データセット
uspto-grants-2014_07
特許番号
US08765762B2

反応ノート

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