Pyridine → 1,3-Dibenzyl-5-(2-thienylacetyl)barbituric acid

HRID 2300041

反応式

HRID 2300041 の反応式
[CH2:1]([N:8]1[C:15](=[O:16])[CH2:14][C:12](=[O:13])[N:11]([CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[C:9]1=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N1C=CC=CC=1.[S:30]1[CH:34]=[CH:33][CH:32]=[C:31]1[CH2:35][C:36](Cl)=[O:37].CCOCC>ClCCl>[CH2:1]([N:8]1[C:15](=[O:16])[CH:14]([C:36](=[O:37])[CH2:35][C:31]2[S:30][CH:34]=[CH:33][CH:32]=2)[C:12](=[O:13])[N:11]([CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[C:9]1=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

6

反応物 4

HCID 1049PyridineHCID 3283Diethyl EtherHCID 1623622-Thiopheneacetyl chlorideHCID 268729Mls002704122

生成物 1

HCID 98890351,3-Dibenzyl-5-(2-thienylacetyl)barbituric acid収率 70.8%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

反応条件

温度
0 °C

実験手順

To a solution of 1,3-dibenzylbarbituric acid 154 mg (0.500 mmol) in dry dichloromethane 2.0 mL under a nitrogen atmosphere, added was pyridine 1.0 mL (12 mmol) and stirred at 0° C. Added was 2-thienylacetyl chloride 80 mg (0.50 mmol, 1.00 equivalent) in dichloromethane 1.0 mL to the solution slowly during a period of 20 minutes, then stirred at room temperature for 3 hours. Added was ether 50 mL and washed the organic layer with 2 M hydrochloric acid and saturated brine, and dried over sodium sulfate. Purified was the crude product 216 mg after removal of the solvent under the reduced pressure, by column chromatography (silica gel, eluted with dichloromethane). It obtained 1,3-dibenzyl-5-(2-thienylacetyl)barbituric acid 153 mg as yellow viscous oil (56.9% yield).

後処理

  1. additionAdded
  2. customof 20 minutes
  3. stirringstirred at room temperature for 3 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-3c1f3b0149b84b2bb77617a4f1ff0a3c
出典データセット
uspto-grants-2002_12
特許番号
US06498164B1

関連ノート

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