Sulfuric Acid → 2,6-Difluoro-3-sulfino-benzoic acid
反応式
Cl[S:2]([C:5]1[C:6]([F:15])=[C:7]([C:11]([F:14])=[CH:12][CH:13]=1)[C:8]([OH:10])=[O:9])(=[O:4])=[O:3].S([O-])([O-])=O.[Na+].[Na+].S(=O)(=O)(O)O>O>[F:15][C:6]1[C:5]([S:2]([OH:4])=[O:3])=[CH:13][CH:12]=[C:11]([F:14])[C:7]=1[C:8]([OH:10])=[O:9]参加物
5
実験手順
41 mmol of 3-chlorosulfonyl-2,6-difluoro-benzoic acid was slowly added over 20 min. to a solution of 310 mmol sodium sulfite in 200 ml of water. The resulting mixture was stirred for one hour at room temperature, cooled to 0° C. and acidified with 20% aqueous sulfuric acid. The sulfinic acid was extracted with ethyl acetate, dried over MgSO4 and concentrated to yield the title compound as a colorless solid. MS (m/e): 220.9 (M−H, 100%)
後処理
- temperaturecooled to 0° C.
- extractionThe sulfinic acid was extracted with ethyl acetate
- dry with materialdried over MgSO4
- concentrationconcentrated
出典と根拠
- ORDレコード
- ord-a6601ba93a15418d940c70d659867afe
- 出典データセット
- uspto-grants-2009_10
- 特許番号
- US07605163B2
反応ノート
読み込み中…