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Ethylene Glycol → methyl 7-bromo-1-[(2-methyl-1,3-dioxolan-2-yl)methyl]-2,3-dihydro-1H-1-benzazepine-4-carboxylate

HRID 587090
ノート
印刷プレビュー

反応式

HRID 587090 の反応式
[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[N:11]([CH2:12][C:13](=[O:15])[CH3:14])[CH2:10][CH2:9][C:8]([C:16]([O:18][CH3:19])=[O:17])=[CH:7][C:6]=2[CH:20]=1.[CH2:21](O)[CH2:22][OH:23]>C1(C)C=CC=CC=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[N:11]([CH2:12][C:13]3([CH3:14])[O:23][CH2:22][CH2:21][O:15]3)[CH2:10][CH2:9][C:8]([C:16]([O:18][CH3:19])=[O:17])=[CH:7][C:6]=2[CH:20]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 174Ethylene GlycolHCID 22329093methyl 7-bromo-1-(2-oxopropyl)-2,3-dihydro-1H-1-benzazepine-4-carboxylate

生成物 1

HCID 22328896methyl 7-bromo-1-[(2-methyl-1,3-dioxolan-2-yl)methyl]-2,3-dihydro-1H-1-benzazepine-4-carboxylate収率 68%

試薬・触媒・溶媒 2

HCID 521998p-Toluenesulfonic acid monohydrate触媒HCID 1140Toluene
溶媒

実験手順

A solution of methyl 7-bromo-1-(2-oxopropyl)-2,3-dihydro-1H-1-benzazepine-4-carboxylate (1.29 g), ethylene glycol (2.3 g) and p-toluenesulfonic acid monohydrate (36 mg) in toluene (10 ml) was heated to reflux for 3 days while removing water. After cooled to room temperature, an aqueous solution of sodium hydrogen carbonate was added to alkaline, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine and dried with magnesium sulfate. After concentration under reduced pressure, the residue was separated and purified with column chromatography (ethyl acetate:hexane=1:4) to give methyl 7-bromo-1-[(2-methyl-1,3-dioxolan-2-yl)methyl]-2,3-dihydro-1H-1-benzazepine-4-carboxylate (992 mg).

後処理

  1. temperatureto reflux for 3 days
  2. customwhile removing water
  3. additionan aqueous solution of sodium hydrogen carbonate was added to alkaline
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe organic layer was washed with saturated brine
  6. dry with materialdried with magnesium sulfate
  7. concentrationAfter concentration under reduced pressure
  8. customthe residue was separated
  9. custompurified with column chromatography (ethyl acetate:hexane=1:4)

出典と根拠

ORDレコード
ord-264cd707054a44768860930208aa4e8b
出典データセット
uspto-grants-2005_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06936602B1

反応ノート

読み込み中…

このページの内容参加物実験手順後処理出典と根拠反応ノート