N-bromobutanimide → Ethyl 2-bromo-2-(pyridin-4-yl)propanoate

HRID 852752ノート

反応式

HRID 852752 の反応式
[N:1]1[CH:6]=[CH:5][C:4]([CH:7]([CH3:13])[C:8]([O:10][CH2:11][CH3:12])=[O:9])=[CH:3][CH:2]=1.[Br:14]N1C(=O)CCC1=O>CC#N.CCOCC.C([O-])([O-])=O.[Na+].[Na+]>[Br:14][C:7]([C:4]1[CH:5]=[CH:6][N:1]=[CH:2][CH:3]=1)([CH3:13])[C:8]([O:10][CH2:11][CH3:12])=[O:9]

参加物

6

反応物 2

HCID 67184N-bromobutanimideHCID 11651240Ethyl 2-(pyridin-4-yl)propanoate

生成物 1

HCID 58930190Ethyl 2-bromo-2-(pyridin-4-yl)propanoate

試薬・触媒・溶媒 3

HCID 3283Diethyl Ether溶媒HCID 6342Acetonitrile溶媒HCID 10340Sodium Carbonate溶媒

実験手順

The above compounds were prepared according to the procedure reported in the literature: see D. Yang, J. Org. Chem. 2002, 67, 7429. MS: 258, 260 (M+1). To a solution of ethyl 2-(pyridin-4-yl)propanoate (5.3 g, 30 mmol), Mg(ClO4)2 (Aldrich, 2.0 g, 9.0 mmol) in CH3CN (60 mL) was added N-bromosuccinimide (Aldrich, 5.9 g, 33 mmol) at room temperature. After 2 h, the reaction mixture was diluted with ether (200 mL), and 10% Na2CO3. The organic phase was separated, dried over Na2SO4, filtered, and concentrated in vacuo. The crude product was purified by silica gel chromatography. Mass Spec. m/z+ion 258, 260 (M+1).

後処理

  1. customThe above compounds were prepared
  2. customThe organic phase was separated
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe crude product was purified by silica gel chromatography

出典と根拠

ORDレコード
ord-1563773d56d14f1393402e1565362bc6
出典データセット
uspto-grants-2007_08
特許番号
US07253196B2

反応ノート

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