Microwave-Assisted Ruthenium-Catalysed <i>ortho</i>
-C−H Functionalization of <i>N</i>
-Benzoyl <i>α</i>
-Amino Ester Derivatives
作者:Nandini Sharma、Vijay Bahadur、Upendra K. Sharma、Debasmita Saha、Zhenghua Li、Yogesh Kumar、Jona Colaers、Brajendra K Singh、Erik V. Van der Eycken
DOI:10.1002/adsc.201800458
日期:2018.8.17
A microwave‐assisted highly efficient intermolecular C−H functionalization sequence has been developed to access substituted isoquinolones using α‐amino acid esters as a directing group. This methodology enables a wide range of N‐benzoyl α‐amino ester derivatives to react via a Ru‐catalysed C−H bond activation sequence, to form isoquinolones with moderate to excellent yields. As an additional advantage
微波辅助高效分子间C-H官能化序列已经发展到使用访问取代的异喹诺酮化合物α -氨基乙酸酯定向基团。这种方法可以使大量的N-苯甲酰基α-氨基酯衍生物通过Ru催化的CH键激活序列反应,以中等到极好的收率形成异喹诺酮类化合物。作为一个额外的优势,我们的策略被证明具有广泛的适用性,并且还使烯烃的反应能够提供链烯基化的苯甲酰胺的途径。该方法还扩展到异喹啉生物碱衍生物的合成,即。氧鸟嘌呤和二肽。所开发的方案既简单又便宜,避免了繁琐的后处理程序,并在MW辐射下有效地工作。