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Potassium Carbonate → methyl [2-fluoro-4-(2-oxo-1(2H)-pyridinyl)phenyl]acetate

HRID 639567
ノート
印刷プレビュー

反応式

HRID 639567 の反応式
[F:1][C:2]1[CH:7]=[C:6](I)[CH:5]=[CH:4][C:3]=1[CH2:9][C:10]([O:12][CH3:13])=[O:11].C(=O)([O-])[O-].[K+].[K+].[OH:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][N:22]=1>CS(C)=O.[Cu]I>[F:1][C:2]1[CH:7]=[C:6]([N:22]2[CH:23]=[CH:24][CH:25]=[CH:26][C:21]2=[O:20])[CH:5]=[CH:4][C:3]=1[CH2:9][C:10]([O:12][CH3:13])=[O:11]
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

6

反応物 3

HCID 11430Potassium CarbonateHCID 187102252-Fluoro-4-iodo phenyl acetic acid methyl esterHCID 178516071HCID 178516071、化合物

生成物 1

HCID 86216773methyl [2-fluoro-4-(2-oxo-1(2H)-pyridinyl)phenyl]acetate収率 39%

試薬・触媒・溶媒 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒
HCID 679
Dimethyl Sulfoxide
溶媒

反応条件

温度
125 °C

実験手順

Part G. To methyl (2-fluoro-4-iodophenyl)acetate (1.0 g, 3.4 mmol) in dimethylsulfoxide (68 mL) was added potassium carbonate (1.9 g, 14 mmol) and 2-hydroxypyridine (650 mg, 6.8 mmol). The resulting mixture was degassed (alternate vacuum/nitrogen three times), and copper(I) iodide (650 mg, 3.4 mmol) was added in one portion. The light green mixture was again degassed (vac/N2) and warmed to 125° C. After 14 h, the brown-black mixture was cooled and poured into saturated aqueous ammonium hydroxide (50 mL) and ethyl acetate (100 mL). The layers were separated, and the organic layers were washed with water (2×50 mL) and saturated aqueous sodium chloride. The organic layers were concentrated, and the resulting residue was purified by radial chromatography (20-100% ethyl acetate in hexanes) to afford methyl [2-fluoro-4-(2-oxo-1(2H)-pyridinyl)-phenyl]acetate (340 mg, 39%) as a green-brown solid. LC/MS (ESI+): 262.2 (M+H)+. 1H NMR (CDCl3) δ 7.22-7.36 (m, 3H), 7.08 (t, 2H), 6.54 (d, 1H), 6.18 (t, 1H), 3.63 (s, 5H).

後処理

  1. additionwas added in one portion
  2. customThe light green mixture was again degassed (vac/N2)
  3. temperaturethe brown-black mixture was cooled
  4. additionpoured into saturated aqueous ammonium hydroxide (50 mL) and ethyl acetate (100 mL)
  5. customThe layers were separated
  6. washthe organic layers were washed with water (2×50 mL) and saturated aqueous sodium chloride
  7. concentrationThe organic layers were concentrated
  8. customthe resulting residue was purified by radial chromatography (20-100% ethyl acetate in hexanes)

出典と根拠

ORDレコード
ord-1dbdf7f90ee042b1a090def54776a28b
出典データセット
uspto-grants-2010_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07691846B2

反応ノート

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