作者:Haoqi Zhang、Margaux Riomet、Alexander Roller、Nuno Maulide
DOI:10.1021/acs.orglett.0c00571
日期:2020.3.20
Herein, we report a metal-free synthesis of cyclic amidines, oxazines, and an oxazinone under mild conditions by electrophilic amide activation. This strategy features an unusual Umpolung cyclization mode and enables the smooth union of α-aryl amides and diverse alkylazides, effectively rerouting our previously reported α-amination transform.
在此,我们报告了在温和条件下通过亲电酰胺活化无金属合成环状脒、恶嗪和恶嗪酮。该策略具有不寻常的 Umpolung 环化模式,使 α-芳基酰胺和多种烷基叠氮化物能够顺利结合,有效地改变了我们之前报道的 α-胺化转化。