Dichloromethane → 4-(4'-Difluoromethoxy-biphenyl-4-yloxymethyl)-5-methyl-furan-2-carboxylic acid methyl ester

HRID 460089ノート

反応式

HRID 460089 の反応式
[CH3:1][O:2][C:3]([C:5]1[O:6][C:7]([CH3:27])=[C:8]([CH2:10][O:11][C:12]2[CH:17]=[CH:16][C:15](B3OC(C)(C)C(C)(C)O3)=[CH:14][CH:13]=2)[CH:9]=1)=[O:4].[F:28][CH:29]([F:38])[O:30][C:31]1[CH:36]=[CH:35][C:34](I)=[CH:33][CH:32]=1.C(=O)([O-])[O-].[Cs+].[Cs+].ClCCl>O1CCOCC1>[CH3:1][O:2][C:3]([C:5]1[O:6][C:7]([CH3:27])=[C:8]([CH2:10][O:11][C:12]2[CH:13]=[CH:14][C:15]([C:34]3[CH:35]=[CH:36][C:31]([O:30][CH:29]([F:38])[F:28])=[CH:32][CH:33]=3)=[CH:16][CH:17]=2)[CH:9]=1)=[O:4]

参加物

6

反応物 4

HCID 6344Dichloromethane2 回HCID 10796Cesium carbonateHCID 27370081-(Difluoromethoxy)-4-iodobenzene2 回HCID 588241625-Methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenoxymethyl]-furan-2-carboxylic acid methyl ester

生成物 1

HCID 588241674-(4'-Difluoromethoxy-biphenyl-4-yloxymethyl)-5-methyl-furan-2-carboxylic acid methyl ester収率 57.2%

試薬・触媒・溶媒 1

HCID 312751,4-Dioxane溶媒

反応条件

温度
80 °C

実験手順

A degassed mixture of 5-methyl-4-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenoxymethyl]-furan-2-carboxylic acid methyl ester (119) (200 mg, 0.54 mmoles), 4-difluoromethoxy-1-iodo-benzene (175 mg, 0.65 mmoles), 2M aqueous cesium carbonate (0.81 ml) and), [1,1′-bis(diphenylphosphino) ferrocene]dichloropalladium(II) complex with dichloromethane (1:1) (20 mg) in 1,4-dioxan (10 ml), under an argon atmosphere was heated at 80° C. for 20 h. Further quantities of 4-difluoromethoxy-1-iodo-benzene (87.5 mg, 0.0.27 mmoles) and [1,1′-bis(diphenylphosphino) ferrocene]dichloropalladium(II) complex with dichloromethane (1:1) (10 mg) were added and heating at 80° C. was continued for 4 hours. After cooling, the mixture was concentrated. The residue was dissolved in dichloromethane and washed with water and brine, and dried. The solvent was evaporated and the residue was purified by flash chromatography using petrol (40–60°)/diethyl ether 9:1v/v as eluent to afford compound 128(120 mg) as a wax. LC/MS System A; Rt=4.14 mins.

後処理

  1. temperatureAfter cooling
  2. concentrationthe mixture was concentrated
  3. dissolutionThe residue was dissolved in dichloromethane
  4. washwashed with water and brine
  5. customdried
  6. customThe solvent was evaporated
  7. customthe residue was purified by flash chromatography
  8. custompetrol (40–60°)/diethyl ether 9

出典と根拠

ORDレコード
ord-a8fc94ddb3b444f7a567772b32e3ca3e
出典データセット
uspto-grants-2007_03
特許番号
US07196089B2

反応ノート

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