N-bromobutanimide → Ethyl 2-(4-amino-3-bromo-5-(2,2,2-trifluoroethoxy)phenyl)-4-methylpentanoate

HRID 1183705ノート

反応式

HRID 1183705 の反応式
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH2:14][CH:15]([CH3:17])[CH3:16])[C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:4][C:3]=1[O:18][CH2:19][C:20]([F:23])([F:22])[F:21].C1C(=O)N([Br:31])C(=O)C1>C(Cl)(Cl)Cl.O>[NH2:1][C:2]1[C:3]([O:18][CH2:19][C:20]([F:21])([F:22])[F:23])=[CH:4][C:5]([CH:8]([CH2:14][CH:15]([CH3:16])[CH3:17])[C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:6][C:7]=1[Br:31]

参加物

5

反応物 2

HCID 67184N-bromobutanimideHCID 57995581Ethyl 2-(4-amino-3-(2,2,2-trifluoroethoxy)phenyl)-4-methylpentanoate

生成物 1

HCID 57995485Ethyl 2-(4-amino-3-bromo-5-(2,2,2-trifluoroethoxy)phenyl)-4-methylpentanoate収率 94.3%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6212Chloroform溶媒

実験手順

To a stirred solution of ethyl 2-(4-amino-3-(2,2,2-trifluoroethoxy)phenyl)-4-methylpentanoate (0.750 g, 2.2 mmol) in dry CHCl3 (100 mL), NBS (0.320 g, 1.8 mmol) was added at 0° C. The reaction mixture was allowed to stir for 3 h at room temperature. The reaction mixture was diluted with water, extracted with DCM (2×50 mL), the combined organic solvents was dried over Na2SO4, filtered and concentrated under reduced pressure. The crude reaction mixture was purified by column chromatography to give ethyl 2-(4-amino-3-bromo-5-(2,2,2-trifluoroethoxy)phenyl)-4-methylpentanoate (700 mg) as a yellow solid.

後処理

  1. extractionextracted with DCM (2×50 mL)
  2. dry with materialthe combined organic solvents was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe crude reaction mixture
  6. customwas purified by column chromatography

出典と根拠

ORDレコード
ord-a8e1932389d947f0be0f875c6484103e
出典データセット
uspto-grants-2014_03
特許番号
US08664249B2

反応ノート

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