Water → Ethyl 2-[7-bromo-3-(4-bromo-2-fluorobenzyl)-1,2,3,4-tetrahydro-2,4-dioxoquinazolin-1-yl]acetate

HRID 569825

反応式

HRID 569825 の反応式
[Br:1][C:2]1[CH:11]=[C:10]2[C:5]([C:6](=[O:22])[N:7]([CH2:13][C:14]3[CH:19]=[CH:18][C:17]([Br:20])=[CH:16][C:15]=3[F:21])[C:8](=[O:12])[NH:9]2)=[CH:4][CH:3]=1.[H-].[Na+].Br[CH2:26][C:27]([O:29][CH2:30][CH3:31])=[O:28].O>CN(C)C=O>[Br:1][C:2]1[CH:11]=[C:10]2[C:5]([C:6](=[O:22])[N:7]([CH2:13][C:14]3[CH:19]=[CH:18][C:17]([Br:20])=[CH:16][C:15]=3[F:21])[C:8](=[O:12])[N:9]2[CH2:26][C:27]([O:29][CH2:30][CH3:31])=[O:28])=[CH:4][CH:3]=1

参加物

6

反応物 4

HCID 962WaterHCID 7748Ethyl bromoacetateHCID 24758Sodium hydrideHCID 144590037-Bromo-3-(4-bromo-2-fluorobenzyl)-1,2,3,4-tetrahydro-2,4-dioxoquinazoline

生成物 1

HCID 14458963Ethyl 2-[7-bromo-3-(4-bromo-2-fluorobenzyl)-1,2,3,4-tetrahydro-2,4-dioxoquinazolin-1-yl]acetate

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
0 °C

実験手順

To a solution of 7-bromo-3-(4-bromo-2-fluorobenzyl)-1,2,3,4-tetrahydro-2,4-dioxoquinazoline (2.80 g) in N,N-dimethylformamide (56 ml) was added sodium hydride (60% in mineral oil, 334 mg) with stirring at 0° C. under an atmosphere of nitrogen and the mixture was stirred at room temperature for 1 hour. To this mixture was added ethyl bromoacetate (0.85 ml) dropwise and the mixture was stirred at room temperature for 2 hours. The solvent was removed under reduced pressure to give a residue, which was poured into water and extracted with ethyl acetate. The extract was washed with water and dried. Removal of the solvent followed by recrystallization from isopropyl either gave ethyl 2-[7-bromo-3-(4-bromo-2-fluorobenzyl)-1,2,3,4-tetrahydro-2,4-dioxoquinazolin-1-yl]acetate (3.11 g).

後処理

  1. stirringthe mixture was stirred at room temperature for 1 hour
  2. stirringthe mixture was stirred at room temperature for 2 hours
  3. customThe solvent was removed under reduced pressure
  4. customto give a residue, which
  5. extractionextracted with ethyl acetate
  6. washThe extract was washed with water
  7. customdried
  8. customRemoval of the solvent
  9. customfollowed by recrystallization from isopropyl

出典と根拠

ORDレコード
ord-a284de40719a4165be417b80bd851f44
出典データセット
uspto-grants-1988_03
特許番号
US04734419

関連ノート

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