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Ethanol → 3-(1-Methyl-1H-pyrazol-4-yl)aniline

HRID 419320
ノート
印刷プレビュー

反応式

HRID 419320 の反応式
Br[C:2]1[CH:3]=[C:4]([CH:6]=[CH:7][CH:8]=1)[NH2:5].[CH3:9][CH2:10]O.C([O-])([O-])=O.[Na+].[Na+].CC1(C)C(C)(C)OBO1.[NH:27]1[CH:31]=C[CH:29]=[N:28]1>C1(C)C=CC=CC=1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CCOC(C)=O>[CH3:29][N:28]1[CH:10]=[C:9]([C:2]2[CH:3]=[C:4]([CH:6]=[CH:7][CH:8]=2)[NH2:5])[CH:31]=[N:27]1
参加物実験手順後処理出典と根拠反応ノート

参加物

9

反応物 4

HCID 702EthanolHCID 10340Sodium CarbonateHCID 115623-BromoanilineHCID 178431122HCID 178431122、化合物

生成物 1

HCID 288753303-(1-Methyl-1H-pyrazol-4-yl)aniline収率 51%

試薬・触媒・溶媒 4

HCID 178418397HCID 178418397、化合物
触媒
HCID 962Water溶媒2 回
HCID 1140Toluene溶媒
HCID 8857Ethyl Acetate溶媒

実験手順

3-Bromoaniline (0.50 mL, 4.6 mmol) was dissolved in 30 mL of PhMe with stirring, and 15 mL of EtOH was added. Na2CO3 (3.06 g, 28.9 mmol) in 15 mL of H2O was added followed by 1-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-1H-pyrazole (0.955 g, 4.59 mmol). Pd(PPh3)4 (0.265 g, 0.229 mmol) was added, and the mixture was heated to reflux with stirring overnight. The mixture was cooled to rt and poured into EtOAc and H2O. The mixture was filtered through celite, and the layers were separated. The organic layer was washed with brine. The organic layer was concentrated and purified by flash chromatography to afford 0.408 g (51%) of the desired product. 1H NMR (400 MHz, DMSO-d6) δ 7.92 (s, 1H), 7.65 (s, 1H), 6.96 (t, J=7.7 Hz, 1H), 6.71-6.64 (m, 2H), 6.41-6.36 (m, 1H), 4.99 (br s, 2H), 3.82 (s, 3H).

後処理

  1. temperaturethe mixture was heated
  2. temperatureto reflux
  3. stirringwith stirring overnight
  4. filtrationThe mixture was filtered through celite
  5. customthe layers were separated
  6. washThe organic layer was washed with brine
  7. concentrationThe organic layer was concentrated
  8. custompurified by flash chromatography

出典と根拠

ORDレコード
ord-3f0014354957416fac62ab3329beaec3
出典データセット
uspto-grants-2012_01
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08093239B2

反応ノート

読み込み中…

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