Sodium Carbonate → N-[5-(2,4-difluorophenyl)-3-(2-methoxyethyl)-1,3-thiazol-2(3H)-ylidene]acetamide

HRID 255115

反応式

HRID 255115 の反応式
Cl[C:2]1[S:6][C:5](=[N:7][C:8](=[O:10])[CH3:9])[N:4]([CH2:11][CH2:12][O:13][CH3:14])[CH:3]=1.[F:15][C:16]1[CH:21]=[C:20]([F:22])[CH:19]=[CH:18][C:17]=1B(O)O.C([O-])([O-])=O.[Na+].[Na+]>COCCOC.O.C(O)C.C(OCC)(=O)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[F:15][C:16]1[CH:21]=[C:20]([F:22])[CH:19]=[CH:18][C:17]=1[C:2]1[S:6][C:5](=[N:7][C:8](=[O:10])[CH3:9])[N:4]([CH2:11][CH2:12][O:13][CH3:14])[CH:3]=1

参加物

7

反応物 3

HCID 10340Sodium CarbonateHCID 27343342,4-Difluorophenylboronic acidHCID 66858991N-[5-chloro-3-(2-methoxyethyl)-1,3-thiazol-2(3H)-ylidene]acetamide

生成物 1

HCID 66860261N-[5-(2,4-difluorophenyl)-3-(2-methoxyethyl)-1,3-thiazol-2(3H)-ylidene]acetamide収率 86.4%

試薬・触媒・溶媒 3

HCID 178418476HCID 178418476、化合物触媒HCID 8857Ethyl Acetate溶媒HCID 86587095Dimethoxyethane ethanol water溶媒

反応条件

温度
85 °C

実験手順

A flask was charged with the product from Example 120A (10.2 g, 42.6 mmol), 2,4-difluorophenylboronic acid (8.08 g, 51.1 mmol), Na2CO3 (64.0 mL of a 2 M aqueous solution, 128 mmol) and PdCl2(PPh3)2 (1.5 g, 2.13 mmol) in 100 mL of DME/H2O/ethanol (7:3:2). The mixture was warmed to 85° C. and stirred overnight. After cooling to room temperature, the mixture was diluted with ethyl acetate and washed with water. The organic extract was dried (MgSO4), filtered and concentrated. The residue was purified by flash chromatography on SiO2 using a gradient of 0% to 100% ethyl acetate:hexane to provide 11.5 g (86%) of the title compound: 1H NMR (300 MHz, CDCl3) δ 2.17 (s, 3 H) 3.27 (s, 3 H) 3.71 (t, J=5.3 Hz, 2 H) 4.37 (t, J=5.4 Hz, 2 H) 7.17-7.24 (m, 1 H) 7.38-7.48 (m, 1 H) 7.64-7.74 (m, 1 H) 7.88 (s, 1 H); MS (ESI+) m/z 313 (M+H)+.

後処理

  1. temperatureAfter cooling to room temperature
  2. washwashed with water
  3. extractionThe organic extract
  4. dry with materialwas dried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified by flash chromatography on SiO2 using a gradient of 0% to 100% ethyl acetate

出典と根拠

ORDレコード
ord-daaa0fbe867a48e7b98bffb6b7f23aae
出典データセット
uspto-grants-2011_01
特許番号
US07875639B2

関連ノート

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