反応式
[CH3:1][C:2]1([CH3:17])[C:11]2[C:6](=[C:7]([CH3:16])[CH:8]=[C:9]([C:13]([OH:15])=[O:14])[C:10]=2[CH3:12])S[CH2:4][CH2:3]1.OO.[S:20]([O-:23])(O)=[O:21].[Na+]>C(O)(=O)C>[CH3:17][C:2]1([CH3:1])[C:11]2[C:6](=[C:7]([CH3:16])[CH:8]=[C:9]([C:13]([OH:15])=[O:14])[C:10]=2[CH3:12])[S:20](=[O:23])(=[O:21])[CH2:4][CH2:3]1参加物
5
反応条件
- 温度
- 80 °C
実験手順
4 ml of acetic acid was added to 5 g (0.02 mol) of 4,4,5,8-tetramethylthiochroman-6-carboxylic acid, further, 6.9 g (0.06 mol) of a 30% hydrogen peroxide aqueous solution was added, and the mixture was heated at 80° C. for 2 hours. 50 ml of a 2% sodium hydrogensulfite aqueous solution was added to the reaction mixture, and a precipitated solid was recovered by filtration to give 5.1 g (yield 90%) of 4,4,5,8-tetramethylthiochroman-6-carboxylic acid-1,1-dioxide.
後処理
- filtrationa precipitated solid was recovered by filtration
出典と根拠
- ORDレコード
- ord-0502aeef36e943b890376ffffe7343c4
- 出典データセット
- uspto-grants-1997_03
- 特許番号
- US05607898
関連ノート
読み込み中…