反应详情

6-Methanesulphonamido-2-methylquinoline-1-oxide (1.65 g) and p-toluenesulphonyl chloride (1.72 g) were heated under reflux for 1 hour in 1,2-dichloroethane solution, and the reaction mixture was then stood at room temperature for 17 hours. The reaction mixture was then washed twice with aqueous sodium bicarbonate, dried (MgSO4) and evaporated in vacuo. The residue was purified by column chromatography on silica eluting with methylene chloride containing methanol (0% up to 1%). The product-containing fractions were combined and evaporated to give a gum which solidified when triturated with ether. Recrystallisation from toluene gave the title compound, yield 0.75 g, m.p. 160°-162°.

1. washThe reaction mixture was then washed twice with aqueous sodium bicarbonate
2. dry with materialdried (MgSO4)
3. customevaporated in vacuo
4. customThe residue was purified by column chromatography on silica eluting with methylene chloride
5. additioncontaining methanol (0% up to 1%)
6. customevaporated
7. customto give a gum which
8. customtriturated with ether
9. customRecrystallisation from toluene