Tetrahydrofuran → 1,3-dimethyl-6-{4-[2-(4-nitrobenzoyloxy)ethyl]piperazin-1-yl}-2,4(1H,3H)-pyrimidinedione

HRID 1085255ノート

反応式

HRID 1085255 の反応式
O1CCCC1.[N+:6]([C:9]1[CH:17]=[CH:16][C:12]([C:13](Cl)=[O:14])=[CH:11][CH:10]=1)([O-:8])=[O:7].[CH3:18][N:19]1[C:24]([N:25]2[CH2:30][CH2:29][N:28]([CH2:31][CH2:32][OH:33])[CH2:27][CH2:26]2)=[CH:23][C:22](=[O:34])[N:21]([CH3:35])[C:20]1=[O:36]>C(N(CC)CC)C>[CH3:18][N:19]1[C:24]([N:25]2[CH2:30][CH2:29][N:28]([CH2:31][CH2:32][O:33][C:13](=[O:14])[C:12]3[CH:11]=[CH:10][C:9]([N+:6]([O-:8])=[O:7])=[CH:17][CH:16]=3)[CH2:27][CH2:26]2)=[CH:23][C:22](=[O:34])[N:21]([CH3:35])[C:20]1=[O:36]

参加物

5

反応物 3

HCID 8028TetrahydrofuranHCID 85024-Nitrobenzoyl chlorideHCID 99702521,3-dimethyl-6-[4-(2-hydroxyethyl)piperazin-1-yl]-2,4(1H,3H)-pyrimidinedione2 回

生成物 1

HCID 200613501,3-dimethyl-6-{4-[2-(4-nitrobenzoyloxy)ethyl]piperazin-1-yl}-2,4(1H,3H)-pyrimidinedione

試薬・触媒・溶媒 1

HCID 8471Triethylamine溶媒

実験手順

To 5 ml of tetrahydrofuran were added 0.5 g of 4-nitrobenzoyl chloride, 0.47 g of 1,3-dimethyl-6-[4-(2-hydroxyethyl)piperazin-1-yl]-2,4(1H,3H)-pyrimidinedione (compound 41) and 1.5 ml of triethylamine, and the resulting mixture was stirred at room temperature overnight. Afterward, the used solvent was distilled off under reduced pressure, and the residue was then dissolved in chloroform. The resulting chloroform solution was washed with water, then dried over anhydrous sodium sulfate, and concentrated to dryness, thereby obtaining a crude product. The latter was then purified through a silica gel column chromatograph (chloroform/methanol=40/1 in terms of volume ratio) in order to obtain 1,3-dimethyl-6-{4-[2-(4-nitrobenzoyloxy)ethyl]piperazin-1-yl}-2,4(1H,3H)-pyrimidinedione. Next, this pyrimidinedione derivative was treated with an oxalic acid/methanol solution in a usual manner to prepare 0.84 g of 1,3-dimethyl-6-{4-[2-(4-nitrobenzoyloxy)ethyl]piperazine-1-yl}-2,4(1H,3H)-pyrimidinedione oxalate (compound 40).

後処理

  1. distillationAfterward, the used solvent was distilled off under reduced pressure
  2. dissolutionthe residue was then dissolved in chloroform
  3. washThe resulting chloroform solution was washed with water
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated to dryness
  6. customobtaining a crude product
  7. customThe latter was then purified through a silica gel column chromatograph (chloroform/methanol=40/1 in terms of volume ratio) in order

出典と根拠

ORDレコード
ord-a9bbc805cc3d42469aecd5b19f582d13
出典データセット
uspto-grants-1991_04
特許番号
US05008267

反応ノート

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