Sodium hydride → (R)-4-((R)-1-tert-butoxyethyl)-3-(6-(difluoromethyl)-2-(methylthio)pyrimidin-4-yl)oxazolidin-2-one

HRID 57352노트

반응식

HRID 57352 반응식
[C:1]([O:5][C@@H:6]([C@H:8]1[CH2:12][O:11][C:10](=[O:13])[NH:9]1)[CH3:7])([CH3:4])([CH3:3])[CH3:2].Cl[C:15]1[CH:20]=[C:19]([CH:21]([F:23])[F:22])[N:18]=[C:17]([S:24][CH3:25])[N:16]=1.[H-].[Na+]>CN(C=O)C.CCOC(C)=O>[C:1]([O:5][C@@H:6]([C@H:8]1[CH2:12][O:11][C:10](=[O:13])[N:9]1[C:15]1[CH:20]=[C:19]([CH:21]([F:23])[F:22])[N:18]=[C:17]([S:24][CH3:25])[N:16]=1)[CH3:7])([CH3:2])([CH3:3])[CH3:4]

참가 물질

6

반응물 3

HCID 24758Sodium hydrideHCID 569729804-Chloro-6-(difluoromethyl)-2-(methylthio)pyrimidineHCID 90414930(R)-4-((R)-1-(tert-butoxy)ethyl)oxazolidin-2-one

생성물 1

HCID 90416007(R)-4-((R)-1-tert-butoxyethyl)-3-(6-(difluoromethyl)-2-(methylthio)pyrimidin-4-yl)oxazolidin-2-one수율 85%

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

실험 절차

A solution of (R)-4-((R)-1-tert-butoxyethyl)oxazolidin-2-one (0.100 g, 0.534 mmol) and 4-chloro-6-(difluoromethyl)-2-(methylthio)pyrimidine (0.124 g, 0.587 mmol, 1.10 equiv) in DMF (2.7 mL) was treated with NaH (60%, 0.026 g, 0.64 mmol, 1.20 equiv), then the resulting mixture (yellow) was stirred at room temperature for 30 min. The reaction mixture was diluted with EtOAc (20 mL), washed with saturated aqueous NaCl (2×20 mL), dried over Na2SO4, filtered and concentrated. Silica gel column chromatography (EtOAc/Heptane 0 to 40%) provided (R)-4-((R)-1-tert-butoxyethyl)-3-(6-(difluoromethyl)-2-(methylthio)pyrimidin-4-yl)oxazolidin-2-one (0.164 g, white solid) in 85% yield. 1H NMR (400 MHz, CDCl3) δ 8.15 (s, 1H), 6.45 (t, J=54 Hz, 1H), 4.80-4.72 (m, 1H), 4.66 (dd, J=9.4, 3.0 Hz, 1H), 4.49-4.34 (m, 2H), 2.58 (s, 3H), 1.25 (s, 9H), 1.02 (d, J=6.5 Hz, 3H); MS m/z 362.3 (M+H)+; Rt-1.09 min.

후처리

  1. washwashed with saturated aqueous NaCl (2×20 mL)
  2. dry with materialdried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated

출처 및 근거

ORD 기록
ord-2262e015b3b04e9cbd0b414c83423cba
출처 데이터셋
uspto-grants-2016_09
특허 번호
US09434719B2

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