反应详情

4-Chloro-7-methyl-2-quinolinecarbonitrile (1-5, 57 g, 0.37 mol, 1.0 equiv.), NBS (75 g, 0.42 mol, 1.14 equiv.) and benzoyl peroxide (0.8 g, 3.3 mmol, 0.01 equiv.) were stirred in CH3CN (30 ml, 12.3 M) at room temperature. After 16 h, the solvent was removed and the residue was partitioned between AcOEt and water, the organic layer was washed with water, dried over MgSO4 and filtered. After removal of the solvent, the residue was recrystallized from methanol to give 60 g of desired 7-(bromomethyl)-4-chloroquinoline-2-carbonitrile (2-4). LRMS m/z (M+H)+ 283.1 found, 282.9 required.

1. customthe solvent was removed
2. customthe residue was partitioned between AcOEt and water
3. washthe organic layer was washed with water
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. customAfter removal of the solvent
7. customthe residue was recrystallized from methanol