m-Chloroperbenzoic acid → 1-[4-(Methylsulfinyl)phenyl]-4-(2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-yl)piperazine

HRID 1850490

反応式

HRID 1850490 の反応式
[CH3:1][S:2][C:3]1[CH:8]=[CH:7][C:6]([N:9]2[CH2:14][CH2:13][N:12]([C:15]3[C:16]([CH3:28])=[C:17]([CH3:27])[C:18]4[O:22][C:21]([CH3:24])([CH3:23])[CH2:20][C:19]=4[C:25]=3[CH3:26])[CH2:11][CH2:10]2)=[CH:5][CH:4]=1.ClC1C=CC=C(C(OO)=[O:37])C=1.C(=O)([O-])O.[Na+]>C1COCC1.C(OCC)(=O)C>[CH3:1][S:2]([C:3]1[CH:4]=[CH:5][C:6]([N:9]2[CH2:14][CH2:13][N:12]([C:15]3[C:16]([CH3:28])=[C:17]([CH3:27])[C:18]4[O:22][C:21]([CH3:23])([CH3:24])[CH2:20][C:19]=4[C:25]=3[CH3:26])[CH2:11][CH2:10]2)=[CH:7][CH:8]=1)=[O:37]

参加物

5

反応物 3

HCID 70297m-Chloroperbenzoic acidHCID 516892Sodium BicarbonateHCID 594850911-[4-(Methylsulfanyl)phenyl]-4-(2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-yl)piperazine

生成物 1

HCID 594850291-[4-(Methylsulfinyl)phenyl]-4-(2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-yl)piperazine収率 46%

試薬・触媒・溶媒 1

HCID 21939870Tetrahydrofuran ethyl acetate溶媒

実験手順

To the THF/ethyl acetate (1:1, 6.0 mL) solution of 1-[4-(methylsulfanyl)phenyl]-4-(2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-yl)piperazine (200 mg, 0.50 mmol) synthesized in Example 89, m-chloroperbenzoic acid (70%, 124 mg, 0.50 mmol) was added under ice cooling, followed by stirring for 2 hours. The reaction solution was added with an aqueous solution of sodium hydrogen carbonate, and extracted with ethyl acetate. The organic layer was washed with saturated brine, and then dried over sodium sulfate. The solvent was removed by distillation under reduced pressure. The resulting residue was purified by silica gel column chromatography (ethyl acetate) and the resulting solids were recrystallized from hexane-THF to obtain the title compound 94 mg (yield 46%). Melting point was 223 to 227° C. (hexane-THF).

後処理

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over sodium sulfate
  4. customThe solvent was removed by distillation under reduced pressure
  5. customThe resulting residue was purified by silica gel column chromatography (ethyl acetate)
  6. customthe resulting solids were recrystallized from hexane-THF

出典と根拠

ORDレコード
ord-ceb1849b66c04490b112a9b6037df841
出典データセット
uspto-grants-2015_02
特許番号
US08957069B2

関連ノート

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