Sodium Sulfite → Sodium 7-(3,4,5-triphenyl-2-oxo-2,3-dihydroimidazol-1-yl)heptanesulphonate

HRID 1742275ノート

反応式

HRID 1742275 の反応式
[C:1]1([N:7]2[C:11]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=3)=[C:10]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[N:9]([CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30]Br)[C:8]2=[O:32])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[S:33]([O-:36])([O-:35])=[O:34].[Na+:37].[Na+]>C(O)C.O>[C:1]1([N:7]2[C:11]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=3)=[C:10]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[N:9]([CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][S:33]([O-:36])(=[O:35])=[O:34])[C:8]2=[O:32])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[Na+:37]

参加物

5

反応物 2

HCID 24437Sodium Sulfite2 回HCID 229163881,4,5-Triphenyl-3-(7-bromoheptyl)imidazol-2-one

生成物 1

HCID 23671144Sodium 7-(3,4,5-triphenyl-2-oxo-2,3-dihydroimidazol-1-yl)heptanesulphonate収率 23.4%

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 962Water溶媒

実験手順

A solution of 1,4,5-triphenyl-3-(7-bromoheptyl)-imidazol-2-one (2.0 g) in ethanol (10 ml) was refluxed with a solution of sodium sulphite (0.55 g) in water (5 ml) for 20 hours. More sodium sulphite (0.2 g) was added and refluxing continued for a further 20 hours. The mixture was evaporated to dryness, boiled in ethanol, filtered hot and evaporated to an oil. This was taken up in a small volume of ethanol, excess diethyl ether added and the precipitated solid filtered off and chromatographed on silica gel (dichloromethane/methanol 5:1). The resulting oil in methanol/water 1:1 was passed down an Amberlyst 15 ion exchange resin (Na form) and evaporated to a solid. This was taken up in ethanol and precipitated with diethyl ether giving sodium 7-(3,4,5-triphenyl-2-oxo-2,3-dihydroimidazol-1-yl)heptanesulphonate (0.49 g), 23%) as a white solid, m.p. 160° C.

後処理

  1. temperaturerefluxing
  2. customThe mixture was evaporated to dryness
  3. filtrationfiltered hot
  4. customevaporated to an oil
  5. additionadded
  6. filtrationthe precipitated solid filtered off
  7. customchromatographed on silica gel (dichloromethane/methanol 5:1)
  8. customevaporated to a solid
  9. customprecipitated with diethyl ether

出典と根拠

ORDレコード
ord-7608b3cc5c944635b7cd0d567d7bea6e
出典データセット
uspto-grants-1994_08
特許番号
US05338752

反応ノート

読み込み中…