作者:Verma, Saumya、Singh, Vikram、Jat, Jawahar L.、Tiwari, Bhoopendra
DOI:10.1021/acs.joc.3c02478
日期:——
The Beckmann reaction is one of the most atom-economical methods for the preparation of amides from ketones. Unlike ketones, the multiple competing reactivities of enones as well as the requirement of demanding reaction conditions for in situ generation of oximes have severely impacted the application of this reaction for the preparation of α,β-unsaturated amides. Herein, we describe the first chemoselective
贝克曼反应是从酮制备酰胺的最经济的原子方法之一。与酮不同,烯酮的多种竞争反应性以及原位生成肟对反应条件的要求严重影响了该反应在制备α,β-不饱和酰胺中的应用。在此,我们描述了使用N- Boc- O-甲苯磺酰羟胺将烯酮直接转化为相应的 α,β-不饱和酰胺的第一种化学选择性方法。