Pd‐Catalyzed C(sp
<sup>2</sup>
)−H Alkoxycarbonylation of Phenethyl‐ and Benzylamines with Chloroformates as CO Surrogates
作者:Paula Andrade‐Sampedro、Jon M. Matxain、Arkaitz Correa
DOI:10.1002/chem.202005338
日期:2021.3.26
The site‐selective functionalization of C−H bonds within a complex molecule remains a challenging task of capital synthetic importance. Herein, an unprecedented Pd‐catalyzed C(sp2)−H alkoxycarbonylation of phenylalanine derivatives and other amines featuring picolinamide as the directing group (DG) is reported. This oxidative coupling is distinguished by its scalability, operational simplicity, and
复杂分子中CH键的位点选择性官能化仍然是一项具有资本合成重要性的挑战性任务。本文报道了空前的钯催化苯丙氨酸衍生物和其他以吡咯酰胺为导向基团(DG)的胺的Pd催化的C(sp 2)-H烷氧基羰基化反应。这种氧化偶合以其可扩展性,操作简便性而著称,并避免使用有毒的一氧化碳作为C 1源。值得注意的是,DG的易裂解使得异吲哚啉酮化合物的有效组装成为可能。密度泛函理论计算支持Pd II / Pd IV催化循环。