The Diels–Alder reactions of para-benzoquinone nitrogen-derivatives: an experimental and theoretical study
作者:Marciana P. Uliana、Bruno M. Servilha、Olga Alexopoulos、Kleber T. de Oliveira、Cláudio F. Tormena、Marco A.B. Ferreira、Timothy J. Brocksom
DOI:10.1016/j.tet.2014.07.088
日期:2014.9
An experimental and theoretical study of the comparative reactivity and selectivity of the Diels–Alder reactions of para-benzoquinones and three nitrogen derivatives have been performed. The mono-oximes derivatives do not react under the tested reaction conditions, whereas the tosylated mono-oximes react slowly. However, the mono N-tosyl imines show excellent reactivity, and superior to the parent
对对苯醌和三种氮衍生物的狄尔斯-阿尔德反应的比较反应性和选择性进行了实验和理论研究。单肟衍生物在所测试的反应条件下不反应,而甲苯磺酸化的单肟反应缓慢。然而,单N-甲苯磺酰基亚胺显示出优异的反应性,并且优于母体对-苯醌。DFT计算支持这些实验结果。