Pyridine → 4'-bromo-N-methyl-2'-aminobenzanilide

HRID 420469

反応式

HRID 420469 の反応式
[Br:1][C:2]1[CH:9]=[CH:8][C:5]([NH:6][CH3:7])=[C:4]([N+:10]([O-])=O)[CH:3]=1.N1C=CC=CC=1.[C:19](Cl)(=[O:26])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1>C(OCC)(=O)C>[Br:1][C:2]1[CH:9]=[CH:8][C:5]([N:6]([CH3:7])[C:19](=[O:26])[C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)=[C:4]([NH2:10])[CH:3]=1

参加物

5

反応物 3

HCID 1049PyridineHCID 7412Benzoyl chlorideHCID 2580424-Bromo-N-methyl-2-nitroaniline

生成物 1

HCID 230940734'-bromo-N-methyl-2'-aminobenzanilide収率 107.3%

試薬・触媒・溶媒 1

HCID 8857Ethyl Acetate溶媒

反応条件

温度
90 °C

実験手順

Dissolving 6.8 g (29 mmol) 4-bromo-N-methyl-2-nitroaniline obtained in the above step (1) into 20 milliliter of pyridine, further adding 5.0 g (35 mmol) benzoyl chloride, the resultant solution was refluxed with heating at the temperature of 90° C. under an atmosphere of argon gas for 7 hours. After completing the reaction, 200 milliliter of ethyl acetate was added and the resultant solution was washed with 10% HCL, with 10% K2CO3 and with a saturated solution of sodium chloride and then, dried with the use of magnesium sulfate. After filtration, the solvent was removed by distillation under reduced pressure and the residue was refined with silicagel column chromatography (hexane:ethyl acetate=10:1 at primary stage→2:1 from middle stage) resultantly obtaining 9.5 g of 4′-bromo-N-methyl-2′-amino-benzanilide as greenish white solids (yield: 96%).

後処理

  1. additionwas added
  2. washthe resultant solution was washed with 10% HCL, with 10% K2CO3 and with a saturated solution of sodium chloride
  3. dry with materialdried with the use of magnesium sulfate
  4. filtrationAfter filtration
  5. customthe solvent was removed by distillation under reduced pressure

出典と根拠

ORDレコード
ord-ff64d971624641f98047a4dfb26436a7
出典データセット
uspto-grants-2012_01
特許番号
US08097349B2

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