Phenylhydrazine → 1-[2-(Difluoromethoxy)phenyl]-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

HRID 1895288노트

반응식

HRID 1895288 반응식
[F:1][CH:2]([F:26])[O:3][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[N:10]1[CH:15]=[C:14]([O:16][CH3:17])[C:13](=[O:18])[C:12]([C:19](=O)[CH:20]=[CH:21][N:22](C)C)=[N:11]1.[C:27]1([NH:33]N)[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1>CC(O)=O>[F:1][CH:2]([F:26])[O:3][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[N:10]1[CH:15]=[C:14]([O:16][CH3:17])[C:13](=[O:18])[C:12]([C:19]2[N:33]([C:27]3[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=3)[N:22]=[CH:21][CH:20]=2)=[N:11]1

참가 물질

4

반응물 2

HCID 7516PhenylhydrazineHCID 667105041-[2-(Difluoromethoxy)phenyl]-3-[3-(dimethylamino)prop-2-enoyl]-5-methoxypyridazin-4(1H)-one

생성물 1

HCID 594362271-[2-(Difluoromethoxy)phenyl]-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one수율 68%

시약·촉매·용매 1

HCID 176Acetic Acid용매

실험 절차

A solution of 1-[2-(difluoromethoxy)phenyl]-3-[3-(dimethylamino)prop-2-enoyl]-5-methoxypyridazin-4(1H)-one (0.50 g, 1.369 mmol) and phenylhydrazine (0.269 mL, 2.74 mmol) in AcOH (5 mL) was refluxed for 2 h. After cooling to room temperature, the mixture was concentrated under reduced pressure. The residue was diluted with AcOEt, washed successively with 1 M HCl aqueous solution, saturated NaHCO3 aqueous solution, and brine, dried over MgSO4, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography eluting with hexane/AcOEt (7/3-0/10) to give the title compound (0.38 g, 68% yield) as an off-white amorphous solid: 1H NMR (300 MHz, CDCl3): δ ppm 3.88 (3H, s), 6.37 (1H, t, J=72.3 Hz), 6.57 (1H, dd, J=8.1, 1.7 Hz), 7.09-7.16 (1H, m), 7.22-7.25 (2H, m), 7.34-7.42 (6H, m), 7.76-7.78 (2H, m). LC-MS (ESI) m/z 411 [M+H]+. Anal. Calcd. for C21H16F2N4O3: C, 61.15; H, 4.07; N, 13.79. Found: C, 61.23; H, 4.11; N, 13.71.

후처리

  1. concentrationthe mixture was concentrated under reduced pressure
  2. additionThe residue was diluted with AcOEt
  3. washwashed successively with 1 M HCl aqueous solution, saturated NaHCO3 aqueous solution, and brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography
  7. washeluting with hexane/AcOEt (7/3-0/10)

출처 및 근거

ORD 기록
ord-3e4ebe131fd6484b894206968406eeb3
출처 데이터셋
uspto-grants-2013_08
특허 번호
US08513251B2

반응 노트

불러오는 중…