Sulfuric Acid → [3-(4-Chlorobenzoyl)isoxazol-5-yl]acetic acid

HRID 638552ノート

反応式

HRID 638552 の反応式
[Cl:1][C:2]1[CH:17]=[CH:16][C:5]([C:6]([C:8]2[CH:12]=[C:11]([CH2:13][CH2:14][OH:15])[O:10][N:9]=2)=[O:7])=[CH:4][CH:3]=1.[OH:18]S(O)(=O)=O>S([O-])(O)(=O)=O.C([N+](CCCC)(CCCC)CCCC)CCC.C(Cl)Cl>[Cl:1][C:2]1[CH:17]=[CH:16][C:5]([C:6]([C:8]2[CH:12]=[C:11]([CH2:13][C:14]([OH:18])=[O:15])[O:10][N:9]=2)=[O:7])=[CH:4][CH:3]=1

参加物

5

反応物 2

HCID 1118Sulfuric AcidHCID 135375932-[3-(4-Chlorobenzoyl)isoxazol-5-yl)ethanol

生成物 1

HCID 13537599[3-(4-Chlorobenzoyl)isoxazol-5-yl]acetic acid

試薬・触媒・溶媒 2

HCID 94433Tetrabutylammonium hydrogen sulfate触媒HCID 6344Dichloromethane溶媒

実験手順

To a mixture of 8.8 g of 2-[3-(4-chlorobenzoyl)isoxazol-5-yl)ethanol, 850 ml of CH2Cl2, a few crystals of tetra-n-butylammonium hydrogen sulfate and 130 ml of 9M H2SO4 was added 10.3 g of pulverized K2Cr2O7. The resulting mixture was stirred at room temperature for 2 hours. After allowing the mixture to settle, it was decanted from the unreacted dichromate. The aqueous phase was extracted with CH2Cl2, and the organics were washed with water and brine, and dried over MgSO4. Concentration gave 5.1 g of a solid. Recrystallization from toluene gave 3.0 g (32%) of needles, m.p. 126°-128°.

後処理

  1. customit was decanted from the unreacted dichromate
  2. extractionThe aqueous phase was extracted with CH2Cl2
  3. washthe organics were washed with water and brine
  4. dry with materialdried over MgSO4
  5. concentrationConcentration

出典と根拠

ORDレコード
ord-6ae740bfe14d46dc94225401f4ae6a68
出典データセット
uspto-grants-1985_12
特許番号
US04562187

反応ノート

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