Chlorosulfonic acid → HCID 21187901、化合物
反応式
[C:1]([O:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=1[O:16][CH3:17])(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl[S:19]([OH:22])(=[O:21])=[O:20]>ClCCl>[C:1]([O:9][C:10]1[CH:15]=[C:14]([S:19]([OH:22])(=[O:21])=[O:20])[CH:13]=[CH:12][C:11]=1[O:16][CH3:17])(=[O:8])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1参加物
4
実験手順
A stirred solution of 2-methoxyphenyl benzoate (10 g) in dichloromethane (100 mL) from 0°-5° C. is treated dropwise with chlorosulfonic acid (2.9 mL) and the solution is then stirred for 3 hours from 0°-5° C. The precipitate which forms is filtered off, washed with cold dichloromethane, and dried in vacuo, to give 3-benzoyloxy-4-methoxybenzenesulfonic acid (11.45 g), in the form of a white solid, m.p. 139°-140° C.
後処理
- filtrationThe precipitate which forms is filtered off