Methyl 3-(4-oxopiperidin-1-yl)benzoate → Methyl-3-(3-dimethylaminomethylene-4-oxopiperidin-1-yl)benzoate

HRID 338674ノート

反応式

HRID 338674 の反応式
[CH3:1][O:2][C:3](=[O:17])[C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([N:10]2[CH2:15][CH2:14][C:13](=[O:16])[CH2:12][CH2:11]2)[CH:5]=1>O1CCOCC1>[CH3:1][O:2][C:3](=[O:17])[C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([N:10]2[CH2:15][CH2:14][C:13](=[O:16])[C:12](=[CH:6][N:10]([CH3:15])[CH3:11])[CH2:11]2)[CH:5]=1

参加物

3

反応物 1

HCID 60059322Methyl 3-(4-oxopiperidin-1-yl)benzoate

生成物 1

HCID 86695813Methyl-3-(3-dimethylaminomethylene-4-oxopiperidin-1-yl)benzoate

試薬・触媒・溶媒 1

HCID 312751,4-Dioxane溶媒

実験手順

A solution of methyl-3-(4-oxopiperidin-1-yl)-benzoate (2.72 g, 11.66 mmol) and DMF-dimethylacetal (6.24 mL, 46.64 mmol) in 1,4-dioxane (50 mL) was refluxed for 43 hours. The reaction mixture was concentrated and the residue was eluted through a flash column (silica gel 60, 230-400 mesh, 5% MeOH in EtOAc to 8% MeOH in EtOAc) to obtain the title compound as a red oil which slowly crystallized on standing (1.52 g, 45%).

後処理

  1. concentrationThe reaction mixture was concentrated
  2. washthe residue was eluted through a flash column (silica gel 60, 230-400 mesh, 5% MeOH in EtOAc to 8% MeOH in EtOAc)

出典と根拠

ORDレコード
ord-a341b6d8d14545a9b1f4e44605ca74f9
出典データセット
uspto-grants-2014_11
特許番号
US08889870B2

反応ノート

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