Chemical and electrocatalytic cascade cyclization of Guareschi imides: ‘one-pot’ simple and efficient way to the 2,4-dioxo-3-azabicyclo[3.1.0]hexane scaffold
作者:Anatoly N. Vereshchagin、Michail N. Elinson、Evgeniya O. Dorofeeva、Dmitry V. Demchuk、Ivan S. Bushmarinov、Alexander S. Goloveshkin、Gennady I. Nikishin
DOI:10.1016/j.tet.2013.04.035
日期:2013.6
as mediator results in fast and efficient cyclization with formation of a substituted 3-azabicyclo[3.1.0]hexane system in 80–98%. The fast (30 min) electrocatalytic reaction proceeds smoothly under neutral and mild conditions. The use of electrocatalysis in a cascade cyclization reaction is an efficient approach to the medicinally relevant 3-azabicyclo[3.1.0]hexane scaffold avoiding the inconvenient
在存在溴化钠作为介体的情况下,在未分裂的细胞中,瓜尔基酰亚胺在乙醇中的电解可快速有效地环化,形成80-98%的取代的3-氮杂双环[3.1.0]己烷系统。快速(30分钟)的电催化反应在中性和温和条件下平稳进行。在级联环化反应中使用电催化是医学上有用的3-氮杂双环[3.1.0]己烷骨架的有效方法,避免了分子卤素或卤代底物直接使用的不便,并且从多样性导向的角度出发也是有益的大规模的过程。