Brønsted Acid Catalyzed Oxygenative Bimolecular Friedel–Crafts‐type Coupling of Ynamides
作者:Dilip V. Patil、Seung Woo Kim、Quynh H. Nguyen、Hanbyul Kim、Shan Wang、Tuan Hoang、Seunghoon Shin
DOI:10.1002/anie.201612471
日期:2017.3.20
A non‐metal approach for accessing α‐oxo carbene surrogates for a C−C bond‐forming bimolecular coupling between ynamides and nucleophilic arenes was developed. This acid‐catalyzed coupling features mild temperature, which is critical for the required temporal chemoselectivity among nucleophiles. The scope of nucleophiles includes indoles, pyrroles, anilines, phenols and silyl enolethers. Furthermore
开发了一种非金属的方法来获得α-氧代卡宾替代物,以实现酰胺和亲核芳烃之间形成C-C键的双分子偶联。这种酸催化的偶联具有适度的温度,这对于亲核试剂之间所需的时间化学选择性至关重要。亲核试剂的范围包括吲哚,吡咯,苯胺,苯酚和甲硅烷基烯醇醚。此外,通过使用手性N,N'-二氧化物提供了对S N 2'机理的直接测试,这也启发了相关金属催化过程中中间体的性质。