Competition between<i>S</i>-oxidation and nitration in reactions of some β- and γ-quinolinyl sulfides with nitrating mixture
作者:Maria J. Maślankiewicz、Maria Jaworska、Piotr Lodowski
DOI:10.1002/jhet.5570440518
日期:2007.9
quinolinyl sulfides with nitrating mixture, which converted on one hand quinolinyl sulfides 1, 3 and 5 to sulfoxides 2, 4 and 8, respectively, on the other hand, sulfides 6, 7 to the respective nitroderivatives 9 and 10. Competitive experiments showed following reactivity order: thianthrene 11 ≥ thianthrene 5-oxide 12 ≥ isothioquinanthrene 3 ≥ thioquinanthrene 1 ≥ 3,3′-diquinolinyl sulfide 5 ≥ 3,4′-diquinolinyl
本研究是为了解释在喹啉基硫化物与硝化混合物,其转化一方面喹啉基硫化物的反应不同的取向进行1,3和5为亚砜2,4和8分别在另一方面,硫化物6,相应的硝基衍生物9和10在图7中示出。竞争性实验显示下列反应顺序:噻蒽11 ≥噻蒽-5-氧化物12 ≥isothioquinanthrene 3 ≥thioquinanthrene 1 ≥3,3'- diquinolinyl硫化物5 ≥3,4'- diquinolinyl硫化物6 ≥4,4'- diquinolinyl硫化物7。考虑到NO 2 +(作为硝化混合物的反应形式)攻击了最强的电子供体(硫或碳)中心,反应顺序与HOMO的结果以及MEP计算密切相关。