Sodium Hydroxide → (4S)-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid

HRID 1744197ノート

反応式

HRID 1744197 の反応式
[CH3:1][C:2]1([CH3:10])[S:6][CH2:5][NH:4][C@H:3]1[C:7](N)=[O:8].[OH-].[Na+].CC1(C)SCNC1C(N)=[O:20]>C(O)C(C)C>[CH3:1][C:2]1([CH3:10])[S:6][CH2:5][NH:4][C@H:3]1[C:7]([OH:20])=[O:8]

参加物

5

反応物 3

HCID 14798Sodium HydroxideHCID 9855557HCID 9855557、化合物HCID 45084573(4S)-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid amide2 回

生成物 1

HCID 2817450(4S)-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid

試薬・触媒・溶媒 1

HCID 6560Isobutanol溶媒

反応条件

温度
110 °C

実験手順

Optically active (4S)-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid amide (5.0 g, 31.3 mmol), sodium hydroxide (0.25 g, 11.2 mmol) and i-butyl alcohol (50 ml) were placed in a 200-ml three-necked flask attached with a stirrer, thermometer and reflux condenser and stirred at 110° C. for 2 hours. After completion of the reaction, the reaction mixture was analyzed by liquid chromatography. As a result, it was found that the residual ratio of the 5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid amide was 82.3%, and the racemization ratio of the optically active (4S)-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid amide was 97.5%.

後処理

  1. customattached with a stirrer
  2. temperaturethermometer and reflux condenser
  3. customAfter completion of the reaction

出典と根拠

ORDレコード
ord-ff889c122c8349cd88d1eb63ed3c94f9
出典データセット
uspto-grants-2006_03
特許番号
US07015029B2

反応ノート

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