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Water → 9-(6,7-Dihydro-5H-cyclopentapyrazin-6-ylmethyl)-7,7-dimethyl-2-(pyrimidin-4-yl)-6,7,8,9-tetrahydro-pyrimido[1,2-alpha]pyrimidin-4-one

HRID 1767060
ノート
印刷プレビュー

反応式

HRID 1767060 の反応式
[CH3:1][C:2]1([CH3:19])[CH2:18][N:6]2[C:7](=[O:17])[CH:8]=[C:9]([C:11]3[CH:16]=[CH:15][N:14]=[CH:13][N:12]=3)[N:10]=[C:5]2[NH:4][CH2:3]1.[H-].[Na+].[N:22]1[C:27]2[CH2:28][CH:29]([CH2:31]OS(C)(=O)=O)[CH2:30][C:26]=2[N:25]=[CH:24][CH:23]=1.O>CN(C)C=O>[N:22]1[C:27]2[CH2:28][CH:29]([CH2:31][N:4]3[C:5]4=[N:10][C:9]([C:11]5[CH:16]=[CH:15][N:14]=[CH:13][N:12]=5)=[CH:8][C:7](=[O:17])[N:6]4[CH2:18][C:2]([CH3:19])([CH3:1])[CH2:3]3)[CH2:30][C:26]=2[N:25]=[CH:24][CH:23]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 962WaterHCID 24758Sodium hydrideHCID 86615340methanesulfonic acid 6,7-dihydro-5H-cyclopentapyrazin-6-ylmethyl esterHCID 1360828947,7-Dimethyl-2-(pyrimidin-4-yl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one

生成物 1

HCID 179562929-(6,7-Dihydro-5H-cyclopentapyrazin-6-ylmethyl)-7,7-dimethyl-2-(pyrimidin-4-yl)-6,7,8,9-tetrahydro-pyrimido[1,2-alpha]pyrimidin-4-one
収率 10.6%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒2 回

反応条件

温度
50 °C

実験手順

A suspension of 0.5 g (1.94 mmol) of 7,7-dimethyl-2-(pyrimidin-4-yl)-6,7,8,9-tetrahydro-4H-pyrimido[1,2-a]pyrimidin-4-one in 10 ml of anhydrous dimethylformamide was treated with 155 mg (3.89 mmol) of sodium hydride (50% suspension in mineral oil) and the resulting mixture was stirred for 40 min at 50° C. 0.888 g (3.89 mmol) of methanesulfonic acid 6,7-dihydro-5H-cyclopentapyrazin-6-ylmethyl ester in 2 ml of anhydrous dimethylformamide was added and the reaction mixture stirred at room temperature for 18 h. The solution was treated with water and extracted with ethyl acetate. The organic phase was dried and evaporated to give crude product, which was purified by silica gel chromatography, eluting with dichloromethane/methanol in the proportions 100/1 to 95/5 to give 80 mg of pure product obtained in the form of free base which was transformed into the hydrochloride salt. Mp: 193–195° C.

後処理

  1. stirringthe reaction mixture stirred at room temperature for 18 h
  2. extractionextracted with ethyl acetate
  3. customThe organic phase was dried
  4. customevaporated
  5. customto give crude product, which
  6. customwas purified by silica gel chromatography
  7. washeluting with dichloromethane/methanol in the proportions 100/1 to 95/5

出典と根拠

ORDレコード
ord-b132698102a146bd91a338006debfb30
出典データセット
uspto-grants-2007_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07232827B2

反応ノート

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このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート