Theophylline → 7-[4-(4-Methylbenzoyl)benzyl]-1,3-dimethylxanthine

HRID 1291421ノート

反応式

HRID 1291421 の反応式
[CH3:1][N:2]1[C:11](=[O:12])[C:10]2[NH:9][CH:8]=[N:7][C:6]=2[N:5]([CH3:13])[C:3]1=[O:4].C(=O)([O-])[O-].[K+].[K+].[CH3:20][C:21]1[CH:36]=[CH:35][C:24]([C:25]([C:27]2[CH:34]=[CH:33][C:30]([CH2:31]Br)=[CH:29][CH:28]=2)=[O:26])=[CH:23][CH:22]=1>CN(C=O)C.O>[CH3:20][C:21]1[CH:36]=[CH:35][C:24]([C:25]([C:27]2[CH:28]=[CH:29][C:30]([CH2:31][N:9]3[C:10]4[C:11](=[O:12])[N:2]([CH3:1])[C:3](=[O:4])[N:5]([CH3:13])[C:6]=4[N:7]=[CH:8]3)=[CH:33][CH:34]=2)=[O:26])=[CH:23][CH:22]=1

参加物

6

反応物 3

HCID 2153TheophyllineHCID 11430Potassium CarbonateHCID 108807584-(4-Toluoyl)benzyl bromide

生成物 1

HCID 189191537-[4-(4-Methylbenzoyl)benzyl]-1,3-dimethylxanthine収率 45.9%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

A solution of 1,3-dimethylxanthine (99 mg), potassium carbonate (135 mg), 4-(4-methylbenzoyl)benzyl bromide (201 mg) in DMF (10 ml) was stirred at 60° C. for 5 hours. This reaction mixture was poured in water and extracted with ethyl acetate. The extract was washed with water, dried, and concentrated. The residue was purified by silica gel column chromatography (hexane: ethyl acetate =1:5) and recrystallized from ethyl acetate-isopropyl ether to provide the title compound as colorless solid (98 mg).

後処理

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with water
  3. customdried
  4. concentrationconcentrated
  5. customThe residue was purified by silica gel column chromatography (hexane: ethyl acetate =1:5)
  6. customrecrystallized from ethyl acetate-isopropyl ether

出典と根拠

ORDレコード
ord-e4edcaa068964357a3fa09f747dabab6
出典データセット
uspto-grants-1998_05
特許番号
US05753664

反応ノート

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