Experimental and theoretical rearrangement of N-acyl-2,2- dimethylaziridines in acidic medium
作者:MADIHA KAMOUN MHIRI、FIRAS ABOUMESSAAD、MOHAMED LOTFI EFRIT、YOUSSEF ARFAOUI、NÉJI BESBES
DOI:10.1007/s12039-015-1020-x
日期:2016.2
depending on the acidity of the medium and the nature of the acyl group. A mechanism has been suggested to explain the formation of these three products. DFT calculations employing the Gaussian 09 program with DFT/B3LYP methods and 6-311++G(2d,2p) basis set were carried out which gave the most stable geometry as well as their atomic charge distributions of compounds 1-4. The acidic aqueous solutions of the
在浓硫酸中,室温下N-酰基-2,2-二甲基氮丙啶1的酸异构化会生成恶唑啉2,但在室温下在纯水中的1的中性水解会生成酰胺醇3。但是,在室温下使用不同浓度的H 2 SO 4水溶液会导致恶唑啉2,酰胺醇3和烯丙基酰胺4的混合物。收率取决于培养基的酸度和酰基的性质。已经提出了一种机制来解释这三种产物的形成。使用具有DFT / B3LYP方法的高斯09程序和6-311 ++ G(2d,2p)基集进行了DFT计算,给出了最稳定的几何形状以及化合物1-4的原子电荷分布。 N-酰基-2,2- dimethylaziridines的酸性水溶液1所导致恶唑啉的混合物2,amidoalcohols 3和methallylamides 4。提出来解释的产物的形成机理2 - 4已经通过使用DFT / B3LYP方法和6-311 ++ G(2D,2P)基组的量子化学计算证实。