Water → 2-Bromo-5-ethyl-4-phenyl-1,3-thiazole

HRID 2263197ノート

反応式

HRID 2263197 の反応式
[CH2:1]([CH:3]([S:12][C:13]#[N:14])[C:4]([C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)=C)[CH3:2].[BrH:15].C(O)(=O)C.O>C(O)(=O)C>[Br:15][C:13]1[S:12][C:3]([CH2:1][CH3:2])=[C:4]([C:6]2[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=2)[N:14]=1

参加物

5

反応物 3

HCID 962WaterHCID 21893785Acetic Acid Mixture with Hydrobromic AcidHCID 862451611-Ethyl-2-phenylprop-2-en-1-yl thiocyanate

生成物 1

HCID 687783792-Bromo-5-ethyl-4-phenyl-1,3-thiazole収率 74.2%

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒

反応条件

温度
130 °C

実験手順

To a solution of 1-ethyl-2-phenylprop-2-en-1-yl thiocyanate (4.15 g, 20.2 mmol) in acetic acid (40 ml) was added a 25% hydrogen bromide/acetic acid (40 ml) solution, and the mixture was stirred at 130° C. for 2 hours. Water was poured into the reaction solution, and the mixture was extracted with chloroform. The extract was washed with water and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1) to give the desired product (4.02 g, 74.2%) as an oil.

後処理

  1. extractionthe mixture was extracted with chloroform
  2. washThe extract was washed with water
  3. dry with materialdried over anhydrous magnesium sulfate
  4. distillationthe solvent was distilled off under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1)

出典と根拠

ORDレコード
ord-c88dff46ed624628b4738a2a32025952
出典データセット
uspto-grants-2010_12
特許番号
US07851473B2

反応ノート

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