Tetrahydrofuran → 2-(3-Phenyl pyridin-4-yl)-5-(trifluoromethyl)benzoxazole

HRID 884852ノート

反応式

HRID 884852 の反応式
I[C:2]1[CH:3]=[N:4][CH:5]=[CH:6][C:7]=1[C:8]1[O:9][C:10]2[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][C:11]=2[N:12]=1.[C:21]1(B(O)O)[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1.O1CCCC1.[OH-].[Na+]>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.O>[C:21]1([C:2]2[CH:3]=[N:4][CH:5]=[CH:6][C:7]=2[C:8]2[O:9][C:10]3[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][C:11]=3[N:12]=2)[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1

参加物

7

反応物 4

HCID 8028TetrahydrofuranHCID 14798Sodium HydroxideHCID 66827Phenylboronic AcidHCID 668805972-(3-Iodopyridin-4-yl)-5-(trifluoromethyl)benzoxazole

生成物 1

HCID 668806132-(3-Phenyl pyridin-4-yl)-5-(trifluoromethyl)benzoxazole収率 26.5%

試薬・触媒・溶媒 2

HCID 178418476HCID 178418476、化合物触媒HCID 962Water溶媒

実験手順

To a mixture of 0.78 g of 2-(3-iodopyridin-4-yl)-5-(trifluoromethyl)benzoxazole, 0.27 g of phenylboronic acid, 5 ml of tetrahydrofuran and 0.14 g of dichlorobis(triphenylphosphine)palladium (II), 3 ml of 10% aqueous solution of sodium hydroxide was added and heated to reflux for three hours. Water was added to the reaction mixture, followed by extraction with ethyl acetate twice. The combined organic layers were washed with water and a saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.18 g of 2-(3-phenyl pyridin-4-yl)-5-(trifluoromethyl)benzoxazole (hereinafter, referred to as “active compound 32”).

後処理

  1. additionwas added
  2. temperatureheated
  3. temperatureto reflux for three hours
  4. extractionfollowed by extraction with ethyl acetate twice
  5. washThe combined organic layers were washed with water
  6. dry with materiala saturated sodium chloride solution, dried over anhydrous magnesium sulfate
  7. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-e1638b6e1f0d46db8c9e54c5b156f2e0
出典データセット
uspto-grants-2012_08
特許番号
US08242133B2

反応ノート

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