p-Toluenesulfonic acid → 2-[3-(2-hydroxy-ethoxy)-5-methoxy-phenyl]-5,7-dimethoxy-3H-quinazolin-4-one

HRID 591854노트

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HRID 591854 반응식
[NH2:1][C:2]1[CH:10]=[C:9]([O:11][CH3:12])[CH:8]=[C:7]([O:13][CH3:14])[C:3]=1[C:4]([NH2:6])=[O:5].[OH:15][CH2:16][CH2:17][O:18][C:19]1[CH:20]=[C:21]([CH:24]=[C:25]([O:27][CH3:28])[CH:26]=1)[CH:22]=O.OS([O-])=O.[Na+].CC1C=CC(S(O)(=O)=O)=CC=1>CN(C)C(=O)C>[OH:15][CH2:16][CH2:17][O:18][C:19]1[CH:20]=[C:21]([C:22]2[NH:6][C:4](=[O:5])[C:3]3[C:2](=[CH:10][C:9]([O:11][CH3:12])=[CH:8][C:7]=3[O:13][CH3:14])[N:1]=2)[CH:24]=[C:25]([O:27][CH3:28])[CH:26]=1

참가 물질

6

반응물 4

HCID 6101p-Toluenesulfonic acidHCID 203490162-Amino-4,6-dimethoxybenzamideHCID 23665763Sodium BisulfiteHCID 866620393-(2-Hydroxy-ethoxy)-5-methoxy-benzaldehyde

생성물 1

HCID 1363480502-[3-(2-hydroxy-ethoxy)-5-methoxy-phenyl]-5,7-dimethoxy-3H-quinazolin-4-one

시약·촉매·용매 1

HCID 31374Dimethylacetamide용매

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온도
117.5 °C

실험 절차

To a solution of 2-amino-4,6-dimethoxy-benzamide (7.50 g, 38.2 mmol) and 3-(2-hydroxy-ethoxy)-5-methoxy-benzaldehyde (7.50 g, 38.2 mmol) in N,N-dimethylacetamide (30 mL) was added NaHSO3 (58.5 wt %, 4.37 g, 42.0 mmol) and p-TSA (0.72 g, 3.8 mmol). The reaction mixture was heated to 115-120° C. for 16 hours, and then cooled to room temperature. N,N-dimethylacetamide was removed under reduced pressure, the residue was diluted with water (50 mL), and the solid was filtered, collected, and mixed with ether (50 mL), then filtered and dried under vacuum, to give 2-[3-(2-hydroxy-ethoxy)-5-methoxy-phenyl]-5,7-dimethoxy-3H-quinazolin-4-one as a white solid. Yield: 10 g (70%).

후처리

  1. temperaturecooled to room temperature
  2. customN,N-dimethylacetamide was removed under reduced pressure
  3. additionthe residue was diluted with water (50 mL)
  4. filtrationthe solid was filtered
  5. customcollected
  6. additionmixed with ether (50 mL)
  7. filtrationfiltered
  8. customdried under vacuum

출처 및 근거

ORD 기록
ord-56e74669aad44954aca2d933f3d42ff4
출처 데이터셋
uspto-grants-2016_01
특허 번호
US09238640B2

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