반응식
Cl.[Cl:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7]([N:13]([C:17]3[CH:22]=[CH:21][C:20]([O:23][CH3:24])=[CH:19][CH:18]=3)N=CC)=[N:8][CH:9]=[N:10]2)=[CH:5][CH:4]=1.[CH3:25][C:26]([CH2:28][CH2:29][C:30]([OH:32])=[O:31])=O.O>C(O)(=O)C>[Cl:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7]([N:13]3[C:17]4[C:22](=[CH:21][C:20]([O:23][CH3:24])=[CH:19][CH:18]=4)[C:28]([CH2:29][C:30]([OH:32])=[O:31])=[C:26]3[CH3:25])=[N:8][CH:9]=[N:10]2)=[CH:5][CH:4]=1참가 물질
실험 절차
A mixture of acetaldehyde N1 -(7chloroquinazolin-4-yl)-p-methoxyphenylhydrazone hydrochloride (25g.) and laevulinic acid (50g.) in acetic acid (120ml.) was heated under reflux for 1-2 hours. The dark red mixture was then added to water (1.5 1.). The solid obtained was separated by filtration and dissolved in a mixture of water (50ml.) and 5N-aqueous ammonium hydroxide solution (50ml.). The solution was extracted with ether (3 × 50ml.) and the aqueous layer acidified with acetic acid to pH4. The mixture was then extracted with ethyl acetate (3 × 50ml.) and the extracts washed with water (30ml.) and then with saturated sodium chloride solution (30ml.) before being dried (MgSO4). Evaporation of the solvent gave a dark brown syrup which crystallised on addition of methanol (40ml.) to give 1-(7-chloroquinazolin-4-yl)5-methoxy-2-methylindol-3-ylacetic acid as a yellow solid, m.p. 205°-208° C.
후처리
- temperaturewas heated
- temperatureunder reflux for 1-2 hours
- customThe solid obtained
- customwas separated by filtration
- dissolutiondissolved in a mixture of water (50ml.) and 5N-aqueous ammonium hydroxide solution (50ml.)
- extractionThe solution was extracted with ether (3 × 50ml.)
- extractionThe mixture was then extracted with ethyl acetate (3 × 50ml.)
- washthe extracts washed with water (30ml.)
- dry with materialwith saturated sodium chloride solution (30ml.) before being dried (MgSO4)
- customEvaporation of the solvent
- customgave a dark brown syrup which
- customcrystallised on addition of methanol (40ml.)
출처 및 근거
- ORD 기록
- ord-e16c723d78704363889cb0d090861da9
- 출처 데이터셋
- uspto-grants-1977_03
- 특허 번호
- US04012513
연결된 노트
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