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Sodium Carbonate → 1-Fluoro-2-nitro-3-(prop-1-en-2-yl)benzene

HRID 1475609
ノート
印刷プレビュー

反応式

HRID 1475609 の反応式
Br[C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[N+:9]([O-:11])=[O:10].O1CCOCC1.C(=O)([O-])[O-].[Na+].[Na+].[CH3:24][C:25]1(C)[C:29](C)(C)OB(C(C)=C)O1>C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.Cl[Pd]Cl.O>[F:8][C:4]1[CH:5]=[CH:6][CH:7]=[C:2]([C:25]([CH3:29])=[CH2:24])[C:3]=1[N+:9]([O-:11])=[O:10]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 10340Sodium CarbonateHCID 312751,4-DioxaneHCID 27831521-Bromo-3-fluoro-2-nitrobenzeneHCID 109974264,4,5,5-Tetramethyl-2-(prop-1-en-2-yl)-1,3,2-dioxaborolane

生成物 1

HCID 866914681-Fluoro-2-nitro-3-(prop-1-en-2-yl)benzene収率 75.3%

試薬・触媒・溶媒 2

HCID 6102075
Dichlorobis(triphenylphosphine)palladium
触媒
HCID 962Water溶媒

反応条件

温度
80 °C

実験手順

To a mixture of 1-bromo-3-fluoro-2-nitrobenzene (0.953 g, 4.33 mmol) in a 100 mL round-bottomed flask equipped with a magnetic stir bar and nitrogen inlet were added dioxane (17.3 mL), sodium carbonate (0.551 g, 5.20 mmol), water (4.33 mL), and 4,4,5,5-tetramethyl-2-(prop-1-en-2-yl)-1,3,2-dioxaborolane (0.977 mL, 5.20 mmol). To this mixture was added bis(triphenyl-phosphine)palladium(II)chloride (0.243 g, 0.347 mmol). The flask was evacuated and purged with nitrogen (3×) and then heated to 80° C. and stirred overnight. The reaction was cooled to room temperature, filtered through Celite®, and the pad was washed with ethyl acetate. The phases were separated and the organic phase was concentrated. Purification by flash column chromatography provided the title compound (0.590 g, 3.26 mmol, 75% yield) as a light yellow oil: 1H NMR (400 MHz, CDCl3) δ 7.48-7.36 (m, 1H), 7.21-7.06 (m, 2H), 5.23 (p, J=1.5 Hz, 1H), 5.05 (q, J=1.1 Hz, 1H), 2.09 (s, 3H); 13C NMR (101 MHz, CDCl3) δ 153.56 (d, JCF=257.5 Hz), 139.62, 139.60, 138.83, 131.48 (d, JCF=8.6 Hz), 124.47 (d, JCF=3.6 Hz), 117.60, 115.51 (d, JCF=19.1 Hz), 23.18.

後処理

  1. customequipped with a magnetic stir bar and nitrogen inlet
  2. customThe flask was evacuated
  3. custompurged with nitrogen (3×)
  4. temperatureThe reaction was cooled to room temperature
  5. filtrationfiltered through Celite®
  6. washthe pad was washed with ethyl acetate
  7. customThe phases were separated
  8. concentrationthe organic phase was concentrated
  9. customPurification by flash column chromatography

出典と根拠

ORDレコード
ord-978fdec2d04f492ab839ed8782ef4aca
出典データセット
uspto-grants-2015_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09018388B2

反応ノート

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