Cesium carbonate → (E)-5-(6-chloro-5-(2-ethoxyvinyl)pyridin-2-yl)-2-(4-fluorophenyl)-N-methyl-6-(N-methylmethylsulfonamido)benzofuran-3-carboxamide

HRID 595748ノート

反応式

HRID 595748 の反応式
Br[C:2]1[N:7]=[C:6]([Cl:8])[C:5](/[CH:9]=[CH:10]/[O:11][CH2:12][CH3:13])=[CH:4][CH:3]=1.[F:14][C:15]1[CH:20]=[CH:19][C:18]([C:21]2[O:22][C:23]3[CH:33]=[C:32]([N:34]([CH3:39])[S:35]([CH3:38])(=[O:37])=[O:36])[C:31](B4OC(C)(C)C(C)(C)O4)=[CH:30][C:24]=3[C:25]=2[C:26]([NH:28][CH3:29])=[O:27])=[CH:17][CH:16]=1.C(=O)([O-])[O-].[Cs+].[Cs+].O1CCOCC1>O>[Cl:8][C:6]1[N:7]=[C:2]([C:31]2[C:32]([N:34]([CH3:39])[S:35]([CH3:38])(=[O:37])=[O:36])=[CH:33][C:23]3[O:22][C:21]([C:18]4[CH:19]=[CH:20][C:15]([F:14])=[CH:16][CH:17]=4)=[C:25]([C:26]([NH:28][CH3:29])=[O:27])[C:24]=3[CH:30]=2)[CH:3]=[CH:4][C:5]=1/[CH:9]=[CH:10]/[O:11][CH2:12][CH3:13]

参加物

6

反応物 4

HCID 10796Cesium carbonateHCID 312751,4-DioxaneHCID 682394022-(4-fluorophenyl)-N-methyl-6-(N-methylmethylsulfonamido)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzofuran-3-carboxamideHCID 90332603(E)-6-bromo-2-chloro-3-(2-ethoxyvinyl)pyridine

生成物 1

HCID 90332463(E)-5-(6-chloro-5-(2-ethoxyvinyl)pyridin-2-yl)-2-(4-fluorophenyl)-N-methyl-6-(N-methylmethylsulfonamido)benzofuran-3-carboxamide

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
60 °C

実験手順

To a mixture of (E)-6-bromo-2-chloro-3-(2-ethoxyvinyl)pyridine (3.37 g, 12.84 mmol), 2-(4-fluorophenyl)-N-methyl-6-(N-methylmethylsulfonamido)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzofuran-3-carboxamide (6.45 g, 12.84 mmol), cesium carbonate (10.46 g, 32.1 mmol), and 1,1′ Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (0.524 g, 0.642 mmol) was added 1,4-Dioxane (83 mL) followed by H2O (8.34 mL). A steady stream of N2 was bubbled through the reaction mixture for 7 minutes then the mixture was heated to 60° C. for 16 h. The mixture was cooled to ambient temperature, diluted with EtOAc, and washed successively with H2O (1×) and brine (1×). The organic layer was dried over MgSO4, filtered, and concentrated in vacuo. The solid residue was triturated with EtOAc and further purified by silica gel column chromatography using a gradient of 0-30% EtOAc/CH2Cl2 as eluent. Further purification by silica gel column chromatography with a gradient of 0-100% EtOAc/Hexanes as eluent provided the title compound as a tan solid. 1H NMR δ (ppm) (CHCl3-d): 8.03˜7.97 (3H, m), 7.79 (1H, d, J=7.96 Hz), 7.69 (1H, s), 7.52 (1H, d, J=7.50 Hz), 7.28˜7.00 (2H, m), 7.11 (1H, d, J=13.00 Hz), 6.12 (1H, d, J=13.00 Hz), 5.91 (1H, br s), 4.04 (2H, q, J=7.04 Hz), 3.24 (3H, s), 3.03 (3H, d, J=4.87 Hz), 2.89 (3H, s), 1.44 (3H, t, J=7.00). MS (M+H): 557.

後処理

  1. customA steady stream of N2 was bubbled through the reaction mixture for 7 minutes
  2. temperatureThe mixture was cooled to ambient temperature
  3. additiondiluted with EtOAc
  4. washwashed successively with H2O (1×) and brine (1×)
  5. dry with materialThe organic layer was dried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe solid residue was triturated with EtOAc
  9. customfurther purified by silica gel column chromatography
  10. customFurther purification by silica gel column chromatography with a gradient of 0-100% EtOAc/Hexanes as eluent

出典と根拠

ORDレコード
ord-e0e31ad25e894a60bc9931d7c618c808
出典データセット
uspto-grants-2016_01
特許番号
US09243002B2

反応ノート

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