Sodium hydride → 3-(4-chloro-2-nitrophenyl)-6-trifluoromethyl-2,4 (1H, 3H)-pyrimidinedione

HRID 1271761노트

반응식

HRID 1271761 반응식
[H-].[Na+].C(O[C:6](=[O:14])/[CH:7]=[C:8](\[NH2:13])/[C:9]([F:12])([F:11])[F:10])C.[Cl:15][C:16]1[CH:21]=[CH:20][C:19]([N:22]=[C:23]=[O:24])=[C:18]([N+:25]([O-:27])=[O:26])[CH:17]=1>CN(C)C=O.C1(C)C=CC=CC=1>[Cl:15][C:16]1[CH:21]=[CH:20][C:19]([N:22]2[C:6](=[O:14])[CH:7]=[C:8]([C:9]([F:10])([F:11])[F:12])[NH:13][C:23]2=[O:24])=[C:18]([N+:25]([O-:27])=[O:26])[CH:17]=1

참가 물질

6

반응물 3

HCID 24758Sodium hydrideHCID 42472574-Chloro-2-nitrophenyl isocyanateHCID 5702529Ethyl 3-amino-4,4,4-trifluorocrotonate

생성물 1

HCID 570852913-(4-chloro-2-nitrophenyl)-6-trifluoromethyl-2,4 (1H, 3H)-pyrimidinedione

시약·촉매·용매 2

HCID 1140Toluene용매2회HCID 6228Dimethylformamide용매

반응 조건

온도
-30 °C

실험 절차

To a suspension of sodium hydride (60% dispersion in oil, 2.5 g) in anhydrous N,N-dimethylformamide (100 ml) was added dropwise a solution of ethyl-3-amino-4,4,4-trifluorocrotonate in toluene (50 ml) at 0° C. under nitrogen atmosphere. After addition, the mixture was stirred for 20 min at same temperature, then cooled to −30° C. A solution of (4-chloro-2-nitrophenyl)isocyanate in toluene (50 ml) was added dropwise. After stirring for 20 min, the cold bath was removed and the resulting mixture was stirred overnight at ambient temperature. The reaction mixture was partitioned between ethyl acetate and 1N-hydrochloric acid. The organic phase was washed with brine (×2) and dried over anhydrous sodium sulfate. The solvent was removed in vacuo and the residue was purified by column chromatography on silica gel eluted with ethyl acetate and hexane (1:1) to afford 3-(4-chloro-2-nitrophenyl)-6-trifluoromethyl-2,4 (1H, 3H)-pyrimidinedione (10.2 g) as a yellow solid.

후처리

  1. additionAfter addition
  2. stirringAfter stirring for 20 min
  3. customthe cold bath was removed
  4. stirringthe resulting mixture was stirred overnight at ambient temperature
  5. customThe reaction mixture was partitioned between ethyl acetate and 1N-hydrochloric acid
  6. washThe organic phase was washed with brine (×2)
  7. dry with materialdried over anhydrous sodium sulfate
  8. customThe solvent was removed in vacuo
  9. customthe residue was purified by column chromatography on silica gel
  10. washeluted with ethyl acetate and hexane (1:1)

출처 및 근거

ORD 기록
ord-f1f74f4f75004521836b59f8348fc2d2
출처 데이터셋
uspto-grants-2007_04
특허 번호
USRE039590E1

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