Trifluoroacetic acid → (S)-2-amino-4-(5-trifluoromethyl-pyridin-2-yloxy)-butan-1-ol

HRID 1026153노트

반응식

HRID 1026153 반응식
FC(F)(F)C(O)=O.C(OC([N:15]1[C@@H:19]([CH2:20][CH2:21][O:22][C:23]2[CH:28]=[CH:27][C:26]([C:29]([F:32])([F:31])[F:30])=[CH:25][N:24]=2)[CH2:18][O:17]C1(C)C)=O)(C)(C)C.[OH-].[Na+]>O.C(#N)C.C(OCC)(=O)C>[NH2:15][C@@H:19]([CH2:20][CH2:21][O:22][C:23]1[CH:28]=[CH:27][C:26]([C:29]([F:32])([F:30])[F:31])=[CH:25][N:24]=1)[CH2:18][OH:17]

참가 물질

7

반응물 3

HCID 6422Trifluoroacetic acidHCID 14798Sodium HydroxideHCID 59173205(S)-2,2-dimethyl-4-[2-(5-trifluoromethyl-pyridin-2-yloxy)-ethyl]-oxazolidine-3-carboxylic acid tert-butyl ester

생성물 1

HCID 59173196(S)-2-amino-4-(5-trifluoromethyl-pyridin-2-yloxy)-butan-1-ol수율 113.6%

시약·촉매·용매 3

HCID 962Water용매HCID 6342Acetonitrile용매HCID 8857Ethyl Acetate용매

반응 조건

온도
80 °C

실험 절차

To a solution of trifluoroacetic acid (0.23 ml) in water (9 ml) was added dropwise a solution of (S)-2,2-dimethyl-4-[2-(5-trifluoromethyl-pyridin-2-yloxy)-ethyl]-oxazolidine-3-carboxylic acid tert-butyl ester (390 mg) in acetonitrile (1.5 ml). The mixture was heated for 90 min at 80° C. with stirring. The mixture was then cooled to room temperature and made basic by addition of 2 M aq. sodium hydroxide solution, then diluted with ethyl acetate and washed sequentially with water and with saturated brine. The organic phase was separated, dried over sodium sulphate and concentrated in vacuo to give (S)-2-amino-4-(5-trifluoromethyl-pyridin-2-yloxy)-butan-1-ol (284 mg, quant.) as a yellow oil. MS (ISP): 251.2 ([M+H]+).

후처리

  1. temperatureThe mixture was then cooled to room temperature
  2. washwashed sequentially with water and with saturated brine
  3. customThe organic phase was separated
  4. dry with materialdried over sodium sulphate
  5. concentrationconcentrated in vacuo

출처 및 근거

ORD 기록
ord-92c2d4d88f46446589097fa708d82c69
출처 데이터셋
uspto-grants-2014_05
특허 번호
US08729113B2

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