Sodium Bicarbonate → 4-(2H-1,3-Benzodioxol-4-yl)-4-methyl-2-(trifluoromethyl)pentane-1,2-diol

HRID 1444427노트

반응식

HRID 1444427 반응식
C([O:3][C:4](=O)[C:5]([OH:23])([C:19]([F:22])([F:21])[F:20])[CH2:6][C:7]([C:10]1[C:18]2[O:17][CH2:16][O:15][C:14]=2[CH:13]=[CH:12][CH:11]=1)([CH3:9])[CH3:8])C.[H-].[Al+3].[Li+].[H-].[H-].[H-].C(=O)(O)[O-].[Na+]>C(OCC)C>[O:15]1[C:14]2[CH:13]=[CH:12][CH:11]=[C:10]([C:7]([CH3:9])([CH3:8])[CH2:6][C:5]([C:19]([F:20])([F:22])[F:21])([OH:23])[CH2:4][OH:3])[C:18]=2[O:17][CH2:16]1

참가 물질

5

반응물 3

HCID 516892Sodium BicarbonateHCID 17989248HCID 17989248, 화합물HCID 21226445Aluminium lithium hydride

생성물 1

HCID 219488974-(2H-1,3-Benzodioxol-4-yl)-4-methyl-2-(trifluoromethyl)pentane-1,2-diol수율 61%

시약·촉매·용매 1

HCID 3283Diethyl Ether용매

실험 절차

12.5 g (36.03 mmol) of 4-(1,3-benzodioxol-4-yl)-2-hydroxy-4-methyl-2-(trifluoromethyl)-pentanoic acid ethyl ester is introduced into 430 ml of diethyl ether and mixed in portions with 2.05 g (54.1 mmol) of lithium aluminum hydride at 0° C. After stirring overnight at room temperature, the batch is carefully added to sodium bicarbonate solution. It is filtered by means of diatomaceous earth and extracted three times with ethyl acetate. The combined organic extracts are washed with brine, dried, and the solvent is spun off after the desiccant is filtered off. Chromatography of the residue on silica gel (mobile solvent ethyl acetate/hexane) yields 6.7 g (61%) of the desired alcohol.

후처리

  1. filtrationIt is filtered by means of diatomaceous earth
  2. extractionextracted three times with ethyl acetate
  3. washThe combined organic extracts are washed with brine
  4. customdried
  5. filtrationis filtered off

출처 및 근거

ORD 기록
ord-967a9662a573472ea96b6342215494b9
출처 데이터셋
uspto-grants-2010_02
특허 번호
US07662821B2

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