司731亲电取代反应( Electrophilic aromatic Substitution) 硝化( Nitration) NO 2 浓HNO3 HoO 浓H2SO 50~55 98Organic Chemistry Organic Chemistry Xiamen Xiamen University University 7.3.1 亲电取代反应 (Electrophilic Aromatic Substitution) 1. 硝化(Nitration) 浓HNO 3 浓 H 2SO 4 NO 2 50 ~ 55 H 2 O 98