Palladium-catalyzed intramolecular tandem dearomatization of indoles for the synthesis of tetracyclic indolines

oleh: Shao-Bo Duan, Xu-Jing Gao, Hong-Yu Zhang, Cong-Cong Lu, Jiquan Zhao, Ya-Ping Han, Yuecheng Zhang, Yong-Min Liang

Format: Article
Diterbitkan: Elsevier 2021-06-01

Deskripsi

A highly diastereoselective, atom-economical, and palladium-catalyzed Heck protocol for the assembly of structurally diverse indoline scaffolds with vicinal tertiary as well as quaternary stereocenters is described, starting from readily available N-halobenzoyl o-haloaniline derivatives and phenylboronic acids. This cascade annulation reaction, which is scalable and conducts under an ambient atmosphere, provides the valuable tetracyclic indoline derivatives in an efficient and straightforward way.