一系列烷基对二烷氧基苯在不同硝化体系中反应的研究

２－烷基－１，４－二甲氧基苯１ａ－ｄ（烷基为ＣＨ３，ＣＨ３ＣＨ２，ＰｈＣＨ２，（ＣＨ３）３Ｃ）分别在ＨＮＯ３－ＨＯＡｃ和ＮＨ４ＮＯ３－ＨＯＡｃ中反应后生成占绝对优势的硝化产物２－烷基－５－硝基－１，４－二甲氧基苯４ａ－ｄ，而２－烷基－５－叔丁基－１，４－二甲氧基苯２ａ－ｄ及２，５－二叔丁基－１，４－二苄氧基苯３在上述二种硝化体系中的反应在很大程度上取决于所用的硝化体系的性质及反应物的结构。对上述反

Reactions of a Series of Alkyl-p-dialkoxybenzenes with Various Nitrating Agents

Alkyl-1,4-dimethoxybenzenes (1_(a-d)) react with both concentrated HNO_3 and NH_4NO_3 in glacial acetic acid to form only simple nitrated products,2-alkyl-5-nitro-1,4dimethoxybenzenes (4_(a-d)). However, in the case of 2-alkyl-5-t-butyl-1,4-dimethoxvbenzenes (2_(a-d)) or 2,5-di-t-butyl-1, 4-dibenzoxybenzene (3 ), the formation of products greatly depends upon both the properties of the employed nitrating agents and the structures of these reactants. According to the observed resultsk, two possibilities for the reactions mechanism are proposed.