Benzyl Bromide → Methyl 3-bromo-6-(dibenzylamino)pyridine-2-carboxylate

HRID 887755ノート

反応式

HRID 887755 の反応式
[H-].[Na+].[CH2:3](Br)[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1.[NH2:11][C:12]1[N:17]=[C:16]([C:18]([O:20][CH3:21])=[O:19])[C:15]([Br:22])=[CH:14][CH:13]=1>CN(C)C=O.C(OCC)C>[Br:22][C:15]1[C:16]([C:18]([O:20][CH3:21])=[O:19])=[N:17][C:12]([N:11]([CH2:3][C:4]2[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=2)[CH2:3][C:4]2[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=2)=[CH:13][CH:14]=1

参加物

6

反応物 3

HCID 7498Benzyl BromideHCID 24758Sodium hydrideHCID 10657127Methyl 6-amino-3-bromopyridine-2-carboxylate

生成物 1

HCID 59145917Methyl 3-bromo-6-(dibenzylamino)pyridine-2-carboxylate収率 73.2%

試薬・触媒・溶媒 2

HCID 3283Diethyl Ether溶媒HCID 6228Dimethylformamide溶媒2 回

実験手順

To a suspension of 60% sodium hydride (880 mg, 22.0 mmol) and benzyl bromide (6.24 mL, 52.5 mmol) in N,N-dimethylformamide (80 mL) was added a solution of methyl 6-amino-3-bromopyridine-2-carboxylate (2.42 g, 10.5 mmol) in N,N-dimethylformamide (25 mL) under ice-cooling and the mixture was stirred for 30 min. The reaction solution was diluted with diethyl ether, washed with water and saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane=0/100→20/80) to give the title compound (3.16 g, yield 73%).

後処理

  1. temperaturecooling
  2. washwashed with water and saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silica gel column chromatography (ethyl acetate/hexane=0/100→20/80)

出典と根拠

ORDレコード
ord-3ce9316cba1a4fb886aa8db671b1ff2d
出典データセット
uspto-grants-2012_08
特許番号
US08247429B2

反応ノート

読み込み中…