Dimethylformamide → 2-{3-[4-(Trifluoromethyl)pyrazole-1-yl]pyridin-4-yl}-5-(trifluoromethyl)benzoxazole

HRID 1913637ノート

反応式

HRID 1913637 の反応式
F[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.[F:21][C:22]([F:29])([F:28])[C:23]1[CH:24]=[N:25][NH:26][CH:27]=1.C(=O)([O-])[O-].[K+].[K+].CN(C=O)C>O>[F:21][C:22]([F:29])([F:28])[C:23]1[CH:24]=[N:25][N:26]([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:27]=1

参加物

6

反応物 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 127777954-(Trifluoromethyl)-1H-pyrazoleHCID 668801802-(3-Fluoropyridin-4-yl)-5-(trifluoromethyl)benzoxazole

生成物 1

HCID 866510452-{3-[4-(Trifluoromethyl)pyrazole-1-yl]pyridin-4-yl}-5-(trifluoromethyl)benzoxazole収率 91.1%

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
50 °C

実験手順

A mixture of 0.28 g of 2-(3-fluoropyridin-4-yl)-5-(trifluoromethyl)benzoxazole, 0.18 g of 4-(trifluoromethyl)pyrazole, 0.55 g of potassium carbonate and 2 ml of DMF was stirred while heating at 50° C. for 1.5 hours. The reaction mixture was cooled to room temperature. Water was added to the reaction mixture, followed by extraction with ethyl acetate twice. The combined organic layers were washed with a saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.36 g of 2-{3-[4-(trifluoromethyl)pyrazole-1-yl]pyridin-4-yl}-5-(trifluoromethyl)benzoxazole (hereinafter, referred to as “active compound 62”).

後処理

  1. temperatureThe reaction mixture was cooled to room temperature
  2. extractionfollowed by extraction with ethyl acetate twice
  3. washThe combined organic layers were washed with a saturated sodium chloride solution
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-0ac90b4af83e434db859c902047ba1a1
出典データセット
uspto-grants-2013_12
特許番号
US08609705B2

反応ノート

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