Potassium peroxymonosulphate → 4-[3,5-Difluoro-4-(methylsulfonyl)-phenyl]-5-methyl-3-phenylisoxazole

HRID 1838509ノート

反応式

HRID 1838509 の反応式
S([O-])(O[O-])(=O)=[O:2].[K+].[K+].[F:9][C:10]1[CH:11]=[C:12]([C:20]2[C:21]([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)=[N:22][O:23][C:24]=2[CH3:25])[CH:13]=[C:14]([F:19])[C:15]=1[S:16]([CH3:18])=[O:17].O.O.O.O.O.O.C(O[O-])(=O)C1C(=CC=CC=1)C([O-])=O.[Mg+2]>O.CO.ClCCl>[F:19][C:14]1[CH:13]=[C:12]([C:20]2[C:21]([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)=[N:22][O:23][C:24]=2[CH3:25])[CH:11]=[C:10]([F:9])[C:15]=1[S:16]([CH3:18])(=[O:2])=[O:17]

参加物

7

反応物 3

HCID 10313463Potassium peroxymonosulphate2 回HCID 21894687Magnesium 2-(dioxidan-2-ide-1-carbonyl)benzoate--water (1/1/6)HCID 227456134-[3,5-Difluoro-4-(methylsulfinyl)phenyl]-5-methyl-3-phenylisoxazole

生成物 1

HCID 99244894-[3,5-Difluoro-4-(methylsulfonyl)-phenyl]-5-methyl-3-phenylisoxazole収率 93.5%

試薬・触媒・溶媒 3

HCID 887Methanol溶媒2 回HCID 962Water溶媒2 回HCID 6344Dichloromethane溶媒2 回

実験手順

Potassium peroxymonosulfate (0.25 g, 0.40 mmol) and water (7 mL) were added to a mixture of 4-[3,5-difluoro-4-(methyl-sulfinyl)phenyl]-5-methyl-3-phenylisoxazole (0.10 g, 0.30 mmol), dichloromethane (4 mL), and methanol (4 mL). The mixture was stirred for four days at room temperature. To the mixture was added magnesium monoperoxyphathalate hexahydrate (0.50 g, 0.80 mmol), dichloromethane (20 mL), methanol (10 mL). The mixture was stirred vigorously for 18 hours. To the mixture was added potassium peroxymonosulfate (0.35 g, 0.57 mmol), and the reaction continued for 18 hours. The mixture was poured into water and extracted with dichloromethane (4×75 mL). The combined extracts were dried with magnesium sulfate, concentrated, and the residue purified by silica gel chromatography using 30% ethyl acetate in hexanes. A white solid (98 mg, 93%) was obtained. MP 140.4-143.4° C. 1H NMR (CDCl3/400 MHz) 7.35-7.45 (m, 5H), 6.84 (d, 2H, J=9.4), 3.32 (s, 3H) 2.52 (s, 3H). ESHRMS m/z 350.0642 (M+H+, Calcd 350.0662).

後処理

  1. stirringThe mixture was stirred vigorously for 18 hours
  2. waitthe reaction continued for 18 hours
  3. extractionextracted with dichloromethane (4×75 mL)
  4. dry with materialThe combined extracts were dried with magnesium sulfate
  5. concentrationconcentrated
  6. customthe residue purified by silica gel chromatography

出典と根拠

ORDレコード
ord-4ccb8b5256d64cf58457e0492844e8a5
出典データセット
uspto-grants-2004_01
特許番号
US06673818B2

反応ノート

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