(a)硝化 NO2 CHCOONOOI S 人N02 66% 10% (b)磺化 100 N SO3H H S03 90% (c)卤化 1,4-二氧六环 +Br2 75% 25℃ Br(a)硝化 S + CH3 COONO2 o 0C Ac2 O AcOH S NO2 S NO2 + 66% 10% + H N (b)磺化 (c)卤化 100 C o N SO3 + - H 90% N SO3 H O +Br2 1,4- 二氧六环 25C o O Br 75%