tert-Butyl bromoacetate → HCID 10808808、化合物

HRID 1416397ノート

反応式

HRID 1416397 の反応式
[O:1]=C1NCNC1=O.[N+:8]([C:11]1[CH:12]=[C:13]([CH:27]=[CH:28][CH:29]=1)[CH2:14][N:15]1[C:19](=[O:20])[C:18](=[O:21])[N:17]([CH2:22][C:23]([OH:25])=[O:24])[C:16]1=C)([O-:10])=[O:9].C(=O)(O)[O-].[K+].BrCC(O[C:40]([CH3:43])([CH3:42])[CH3:41])=O>CC(C)=O>[OH:20][CH:19]1[N:15]([CH2:14][C:13]2[CH:27]=[CH:28][CH:29]=[C:11]([N+:8]([O-:10])=[O:9])[CH:12]=2)[C:16](=[O:1])[N:17]([CH2:22][C:23]([O:25][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:24])[C:18]1=[O:21]

参加物

6

反応物 4

HCID 79177tert-Butyl bromoacetateHCID 516893Potassium BicarbonateHCID 10638264HCID 10638264、化合物HCID 21388926HCID 21388926、化合物

生成物 1

HCID 10808808HCID 10808808、化合物

試薬・触媒・溶媒 1

HCID 180Acetone溶媒

実験手順

The above-prepared dioxoimidazolidine product of paragraph (1) (12.5 g) and 10 g of potassium bicarbonate were suspended in 150 mL of acetone, 9 mL of tert-butyl bromoacetate was added thereto and the mixture was heated to reflux for eight hours with stirring. Insoluble matters were filtered off, the filtrate was concentrated in vacuo, the residue was dissolved in ethyl acetate and the solution was washed with water and a saturated saline solution. Then the solution was dried over sodium sulfate, ethyl acetate was evaporated therefrom and the resulting residue was purified by a silica gel column to give 12.4 g of tert-butyl 5-hydroxy-1-(3-nitrobenzyl)-2,4-dioxoimidazolidine-3-acetate.

後処理

  1. temperaturethe mixture was heated
  2. temperatureto reflux for eight hours
  3. filtrationInsoluble matters were filtered off
  4. concentrationthe filtrate was concentrated in vacuo
  5. dissolutionthe residue was dissolved in ethyl acetate
  6. washthe solution was washed with water
  7. dry with materialThen the solution was dried over sodium sulfate, ethyl acetate
  8. customwas evaporated
  9. customthe resulting residue was purified by a silica gel column

出典と根拠

ORDレコード
ord-67eeaaa5595247a0aaffb6e74664c7c8
出典データセット
uspto-grants-1999_06
特許番号
US05912261

反応ノート

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