1312制备( Preparation) a We have already seen many examples of a the preparation of aromatic nitro compounds By far the most important route to such compounds is electrophilic aromatic nitration with nitric acid NO CH CH CH CH ①D HNO Ac2O. 20 ⑨D CH CHOrganic Chemistry Organic Chemistry Xiamen Xiamen University University 13.1.2 制 备 (Preparation) „ We have already seen many examples of the preparation of aromatic nitro compounds. By far the most important route to such compounds is electrophilic aromatic nitration with nitric acid. CH 3 CH 3 CH 3 HNO 3 Ac 2O , 20 CH 3 CH 3 CH 3 NO 2