Potassium Carbonate → 7-[4-(4-Chlorobenzoyl)benzyl]-1,3-diethylxanthine

HRID 1291352노트

반응식

HRID 1291352 반응식
[CH2:1]([N:3]1[C:12](=[O:13])[C:11]2[NH:10][CH:9]=[N:8][C:7]=2[N:6]([CH2:14][CH3:15])[C:4]1=[O:5])[CH3:2].C(=O)([O-])[O-].[K+].[K+].[Cl:22][C:23]1[CH:38]=[CH:37][C:26]([C:27]([C:29]2[CH:36]=[CH:35][C:32]([CH2:33]Br)=[CH:31][CH:30]=2)=[O:28])=[CH:25][CH:24]=1>CN(C=O)C.O>[Cl:22][C:23]1[CH:24]=[CH:25][C:26]([C:27]([C:29]2[CH:36]=[CH:35][C:32]([CH2:33][N:10]3[C:11]4[C:12](=[O:13])[N:3]([CH2:1][CH3:2])[C:4](=[O:5])[N:6]([CH2:14][CH3:15])[C:7]=4[N:8]=[CH:9]3)=[CH:31][CH:30]=2)=[O:28])=[CH:37][CH:38]=1

참가 물질

6

반응물 3

HCID 11430Potassium CarbonateHCID 1014201,3-DiethylxanthineHCID 98396514-(4-Chlorobenzoyl)benzyl bromide

생성물 1

HCID 189192647-[4-(4-Chlorobenzoyl)benzyl]-1,3-diethylxanthine수율 54.5%

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매

실험 절차

To a solution of 1,3-diethylxanthine (190 mg), a synthetic process for which is described in Journal of American Chemical Society, 75, 114 (1953), in DMF (5 ml) were added potassium carbonate (189 mg) and 4-(4-chlorobenzoyl)benzyl bromide (282 mg) and the mixture was stirred at room temperature for 17 hours. This reaction mixture was diluted with water and extracted with ethyl acetate. The extract was washed with saturated aqueous NaCl solution and dried over anhydrous sodium sulfate and the solvent was distilled off. The residue was purified by silica gel column chromatography (hexane: ethyl acetate=1:1) and recrystallized (ether-hexane) to provide the title compound as colorless powder (217 mg, 54%).

후처리

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with saturated aqueous NaCl solution
  3. dry with materialdried over anhydrous sodium sulfate
  4. distillationthe solvent was distilled off
  5. customThe residue was purified by silica gel column chromatography (hexane: ethyl acetate=1:1)
  6. customrecrystallized (ether-hexane)

출처 및 근거

ORD 기록
ord-4fda3f39ec894a90a299c99aa25ce44d
출처 데이터셋
uspto-grants-1998_05
특허 번호
US05753664

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