(+/-)-6-bromo-5-chloro-1,4-dihydro-2,2,4,8-tetramethyl-2H-quinolin-3-one 、
溴甲苯 以to afford (±)-4-benzyl-6-bromo-5-chloro-1,4-dihydro-2,2,4,8-tetramethyl-2H-quinolin-3-one的产率得到(+/-)-4-benzyl-6-bromo-5-chloro-1,4-dihydro-2,2,4,8-tetramethyl-2H-quinolin-3-one