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Potassium Hydroxide → tert-butyl 4-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4H-isothiazol-3-yl]-2-methyl-benzoate

HRID 1522775
ノート
印刷プレビュー

反応式

HRID 1522775 の反応式
[C:1]([O:5][C:6](=[O:31])[C:7]1[CH:12]=[CH:11][C:10]([C:13](=O)[CH2:14][C:15]([C:21]2[CH:26]=[C:25]([Cl:27])[CH:24]=[C:23]([Cl:28])[CH:22]=2)([SH:20])[C:16]([F:19])([F:18])[F:17])=[CH:9][C:8]=1[CH3:30])([CH3:4])([CH3:3])[CH3:2].[NH2:32]OS(O)(=O)=O.[OH-].[K+]>O1CCCC1>[C:1]([O:5][C:6](=[O:31])[C:7]1[CH:12]=[CH:11][C:10]([C:13]2[CH2:14][C:15]([C:21]3[CH:26]=[C:25]([Cl:27])[CH:24]=[C:23]([Cl:28])[CH:22]=3)([C:16]([F:19])([F:18])[F:17])[S:20][N:32]=2)=[CH:9][C:8]=1[CH3:30])([CH3:4])([CH3:3])[CH3:2]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 14797Potassium HydroxideHCID 76284hydroxylamine-O-sulfonic acidHCID 894445754-[3-(3,5-Dichloro-phenyl)-4,4,4-trifluoro-3-mercapto-butyryl]-2-methyl-benzoic acid tert-butyl ester

生成物 1

HCID 89444266tert-butyl 4-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4H-isothiazol-3-yl]-2-methyl-benzoate

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran
溶媒

実験手順

To a solution of 4-[3-(3,5-Dichloro-phenyl)-4,4,4-trifluoro-3-mercapto-butyryl]-2-methyl-benzoic acid tert-butyl ester (1.875 g) in tetrahydrofuran (6 mL) was added a solution of Hydroxylamine-O-sulfonic acid (2 equiv.) in a solution of potassium hydroxide (1.2 g in 75 mL of water). After stirring at room temperature for 30 minutes, the mixture was quenched with a solution of hydrochloric acid (1N), extracted with ethyl acetate and washed with brine. The collected organic phases were dried over magnesium sulfate, filtered and the filtrate was evaporated under vacuo. The residue was purified by chromatography on silica gel (eluent: cyclohexane/dichloromethane) to give 4-[5-(3,5-Dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isothiazol-3-yl]-2-methyl-benzoic acid tert-butyl ester (881 mg)

後処理

  1. customthe mixture was quenched with a solution of hydrochloric acid (1N)
  2. extractionextracted with ethyl acetate
  3. washwashed with brine
  4. dry with materialThe collected organic phases were dried over magnesium sulfate
  5. filtrationfiltered
  6. customthe filtrate was evaporated under vacuo
  7. customThe residue was purified by chromatography on silica gel (eluent: cyclohexane/dichloromethane)

出典と根拠

ORDレコード
ord-981ffeeb3fbc4159ac357b8b69c0f8c9
出典データセット
uspto-grants-2015_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09078444B2

反応ノート

読み込み中…

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