Catalytic alkene difunctionalization via Si−H and C−H activations represents an ideal atom‐ and step‐economic pathway for quick assembly of molecular complexity. We herein developed a visible‐light‐promoted metal‐free difunctionalization of alkenesusing abundant CO2 and readily available Si−H and C(sp3)−H bonds as feedstocks. Through the merger of photoredox and hydrogen‐atom‐transfer catalysis, a
Photoredox-catalyzed dicarbofunctionalization of styrenes with amines and CO<sub>2</sub>: a convenient access to γ-amino acids
作者:Bo Zhang、Yaping Yi、Zhong-Qian Wu、Chao Chen、Chanjuan Xi
DOI:10.1039/d0gc02254c
日期:——
of styrenes using CO2 and amines is reported. The reaction is catalyzed by a photoredox catalyst and is compatible with a variety of amines and styrenes. This method affords highly functionalized γ-amino acids in good yields with high regioselectivity.
Visible-Light-Accelerated Copper-Catalyzed [3 + 2] Cycloaddition of <i>N</i>-Tosylcyclopropylamines with Alkynes/Alkenes
作者:Manoj Kumar、Shalini Verma、Vivek Mishra、Oliver Reiser、Akhilesh K. Verma
DOI:10.1021/acs.joc.2c00491
日期:2022.5.6
Copper-catalyzed [3 + 2] cycloadditions of N-tosylcyclopropylamine with alkynes and alkenes have been accomplished under visible light irradiation. The developed approach is compatible with a range of functionalities and allows the synthesis of diversified aminated cyclopentene and cyclopentane derivatives being relevant for drug synthesis. The protocol is operationally simple and economically affordable