Diisopropylethylamine → (2R)-4-[3-(2-fluoro-3-methoxyphenyl)isoxazol-5-yl]-2-methyl-2-(methylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)butanamide

HRID 404218노트

반응식

HRID 404218 반응식
C(N(C(C)C)C(C)C)C.C(P1(=O)OP(CCC)(=O)OP(CCC)(=O)O1)CC.[F:28][C:29]1[C:34]([O:35][CH3:36])=[CH:33][CH:32]=[CH:31][C:30]=1[C:37]1[CH:41]=[C:40]([CH2:42][CH2:43][C@@:44]([CH3:52])([S:48]([CH3:51])(=[O:50])=[O:49])[C:45](O)=[O:46])[O:39][N:38]=1.[O:53]1[CH2:58][CH2:57][CH2:56][CH2:55][CH:54]1[O:59][NH2:60]>CN(C1C=CN=CC=1)C.C(OCC)(=O)C.O>[F:28][C:29]1[C:34]([O:35][CH3:36])=[CH:33][CH:32]=[CH:31][C:30]=1[C:37]1[CH:41]=[C:40]([CH2:42][CH2:43][C@@:44]([CH3:52])([S:48]([CH3:51])(=[O:49])=[O:50])[C:45]([NH:60][O:59][CH:54]2[CH2:55][CH2:56][CH2:57][CH2:58][O:53]2)=[O:46])[O:39][N:38]=1

참가 물질

8

반응물 4

HCID 81531DiisopropylethylamineHCID 111923Propylphosphonic anhydrideHCID 5142091O-(Tetrahydropyran-2-yl)hydroxylamineHCID 70817723(2R)-4-[3-(2-Fluoro-3-methoxyphenyl)isoxazol-5-yl]-2-methyl-2-(methylsulfonyl)butanoic acid

생성물 1

HCID 86709151(2R)-4-[3-(2-fluoro-3-methoxyphenyl)isoxazol-5-yl]-2-methyl-2-(methylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)butanamide수율 44.4%

시약·촉매·용매 3

HCID 142844-(Dimethylamino)pyridine촉매HCID 962Water용매HCID 8857Ethyl Acetate용매2회

실험 절차

N,N-Dimethy-4-aminopyridine (0.04 g, 0.3 mmol, 0.3 equiv), N-ethyl-N-isopropylpropan-2-amine (0.89 mL, 5.2 mmol, 4.5 equiv), T3P® (50% w/w solution in ethyl acetate, 2.7 mL, 4.5 mmol, 4.0 equiv), and (2R)-4-[3-(2-fluoro-3-methoxyphenyl)isoxazol-5-yl]-2-methyl-2-(methylsulfonyl)butanoic acid (0.42 g, 1.1 mmol, 1.0 equiv) were allowed to stir at room temperature for 30 min. A solution of O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (0.15 g, 1.2 mmol, 1.2 equiv) in ethyl acetate (12 mL) was added, and the reaction was allowed to stir overnight (18 h) at room temperature. Water (40 mL) was added, and the mixture was extracted with ethyl acetate (2×50 mL). The combined organic phases were dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The crude material was purified by flash chromatography (25 g silica gel column, 0-100% gradient ethyl acetate in hexanes) to provide (2R)-4-[3-(2-fluoro-3-methoxyphenyl)isoxazol-5-yl]-2-methyl-2-(methylsulfonyl)-N-(tetrahydro-2H-pyran-2-yloxy)butanamide as a tan solid (0.23 g, 42%). MS (LCMS) m/z 469.1 (M−1).

후처리

  1. stirringto stir overnight (18 h) at room temperature
  2. extractionthe mixture was extracted with ethyl acetate (2×50 mL)
  3. dry with materialThe combined organic phases were dried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe crude material was purified by flash chromatography (25 g silica gel column, 0-100% gradient ethyl acetate in hexanes)

출처 및 근거

ORD 기록
ord-5241cba5a0204e5d90b85f29e62c6038
출처 데이터셋
uspto-grants-2014_06
특허 번호
US08748466B2

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