One of the main goals of modern nitration methodology is to increase its regioselectivty in order to meet desirable environments. Regioselectivities of toluene nitration were investigated on the acid-treated bentonites catalysts by using alkyl nitrates. The reaction was highly para-selective, compared as composition (ortho/para=1.63) of nitro isomers of toluene nitration with sulfonitric acid, up to ortho-to-para ratios of 0.52, 0.47, 0.41, 0.41 respectively when using n-propyl nitrate, isopropyl nitrate, cyclohexyl nitrate, isooctyl nitrate on bentonite of sulfuric acid treatment time for 1 hour. A radical cationic component was proposed to elucidate nitration mechanism according to the calculated and exprimental results.
展开▼
机译：现代硝化方法的主要目标之一是增加其区域选择，以满足所需的环境。通过使用硝酸盐对酸处理的膨润土催化剂研究了甲苯硝化的区域。与甲苯硝化硝酸硝基硝酸的硝基异构体的组合物（Ortho / Para = 1.63）与磺酸的组合物（ortho / para = 1.63）相比，在使用N-丙基时分别为0.52,0.47,0.41,0.41的正交比例硝酸盐，硝酸异丙酯，硝酸环己基，硝酸辛酯对硫酸氢酸处理时间1小时。提出了一种自由基阳离子组分，以根据计算的和实验结果来阐明硝化机制。
展开▼
