作者:Changwei Chen、Hongyu Zhang、Gang Xu、Sunliang Cui
DOI:10.1016/j.cclet.2021.02.054
日期:2021.8
building blocks in organic synthesis. Therefore, the investigation for transformation of ynamides with exceptional selectivity and efficiency is attractive and interesting. Herein, we report an oxoarylation of ynamides with N-aryl hydroxamic acids. In the presence of catalytic Cu(OTf)2, both the terminal and internal ynamides could undergo an addition/[3,3] sigmatropic rearrangement cascade with N-aryl hydroxamic
炔烃是富含电子的炔烃,具有独特的反应性,可作为有机合成中的灵活构件。因此,以优异的选择性和效率转化ynamides的研究是有吸引力和有趣的。在此,我们报告了 ynamides 与N-芳基异羟肟酸的氧代芳基化。在催化 Cu (OTf) 2存在下,末端和内部炔酰胺都可以与N-芳基异羟肟酸发生加成 / [3,3] σ 重排级联反应以实现氧代芳基化,同时提供选择性进入(邻氨基) 芳基乙酰胺和羟吲哚。此外,进行了氘标记反应和克级反应以探索机制并展示可扩展性。