Pyridine → 1,3-Bis(3-methylbutyl)-5-(3-methyl-1-oxobutyl)barbituric acid

HRID 2300042ノート

反応式

HRID 2300042 の反応式
[CH3:1][CH:2]([CH3:19])[CH2:3][CH2:4][N:5]1[C:12](=[O:13])[CH2:11][C:9](=[O:10])[N:8]([CH2:14][CH2:15][CH:16]([CH3:18])[CH3:17])[C:6]1=[O:7].N1C=CC=CC=1.[C:26](Cl)(=[O:31])[CH2:27][CH:28]([CH3:30])[CH3:29]>ClCCl>[CH3:17][CH:16]([CH3:18])[CH2:15][CH2:14][N:8]1[C:9](=[O:10])[CH:11]([C:26](=[O:31])[CH2:27][CH:28]([CH3:30])[CH3:29])[C:12](=[O:13])[N:5]([CH2:4][CH2:3][CH:2]([CH3:19])[CH3:1])[C:6]1=[O:7]

参加物

5

反応物 3

HCID 1049PyridineHCID 66054Isovaleryl chlorideHCID 18375361HCID 18375361、化合物

生成物 1

HCID 98848751,3-Bis(3-methylbutyl)-5-(3-methyl-1-oxobutyl)barbituric acid収率 79%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒3 回

反応条件

温度
0 °C

実験手順

To a solution of 1,3-bis(3-methylbutyl)barbituric acid 268 mg (1.00 mmol) in dry dichloromethane 3.0 mL under a nitrogen atmosphere, added was pyridine 0.81 mL (0.79 g, 10 mmol, 10 equivalents) and stirred at 0° C. Added was isovaleryl chloride 121 mg (1.00 mmol, 1.00 equivalent) in dichloromethane 1.5 mL to the solution slowly during a period of 20 minutes, then stirred at room temperature for 4 hours. Added was dichloromethane 40 mL and washed the organic layer with 2 M hydrochloric acid and saturated brine, and dried over sodium sulfate. Purified was the crude product 383 mg, after removal of the solvent under the reduced pressure, by column chromatography (silica gel, eluted with dichloromethane). It obtained 1,3-bis(3-methylbutyl)-5-(3-methyl-1-oxobutyl)barbituric acid 278 mg as white plates (79.0% yield).

後処理

  1. additionAdded
  2. customof 20 minutes
  3. stirringstirred at room temperature for 4 hours
  4. additionAdded
  5. washwashed the organic layer with 2 M hydrochloric acid and saturated brine
  6. dry with materialdried over sodium sulfate
  7. customPurified
  8. customafter removal of the solvent under the reduced pressure
  9. washby column chromatography (silica gel, eluted with dichloromethane)

出典と根拠

ORDレコード
ord-ae657e249fab442d811d13102449de0b
出典データセット
uspto-grants-2002_12
特許番号
US06498164B1

反応ノート

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