Hydrochloric Acid → 2-(4-Hydroxyphenyl)-1,3-thiazole-4-carboxylic acid

HRID 70261

反応式

HRID 70261 の反応式
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=[S:10])[NH2:9])=[CH:4][CH:3]=1.[OH-].[K+].Br[CH2:14][C:15](=O)[C:16]([OH:18])=[O:17].Cl>O.CO>[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[S:10][CH:14]=[C:15]([C:16]([OH:18])=[O:17])[N:9]=2)=[CH:4][CH:3]=1

参加物

7

実験手順

4-Hydroxybenzenecarbothioamide (1.53 g, 10 mmol) and potassium hydroxide (1.50 g, 26.8 mmol) were dissolved in a mixture of 60 ml of water and 15 ml of methanol. A solution of bromopyruvic acid (1.67 g, 10 mmol) in 10 ml of methanol was added dropwise at room temperature. The resulting mixture was heated to reflux for 1.5 h, cooled to room temperature, poured into 100 ml of water and adjusted with 0.2N HCl solution to pH2. The mixture was placed in a refrigerator for 15 h. The title compound was obtained by filtration as a brown solid.

後処理

  1. temperatureThe resulting mixture was heated
  2. temperatureto reflux for 1.5 h

出典と根拠

ORDレコード
ord-51cdc225d7004e06882d28eb7155c357
出典データセット
uspto-grants-2014_09
特許番号
US08822518B2

関連ノート

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