Cobalt(II)-Catalyzed Proficient Synthesis of Enaminones from Aryl Alkenes and Amines.

Autor: Sau, Subham, Das, Krishna Mohan, Ghosh, Swapnamoy, Thakur, Arunabha
Předmět:
Zdroj: Synlett; Dec2024, Vol. 35 Issue 20, p2403-2408, 6p
Abstrakt: A simple, cost-effective, and modular strategy has been developed to synthesize synthetically and pharmaceutically active enaminones by oxidative amination of aryl alkenes with amines and CHCl3 , using tert -butyl hydroperoxide as an oxidant. We describe the synthesis of enaminones from vinyl arenes and sterically hindered N , N -diisopropylethylamine (DIPEA) by employing an Earth-abundant cobalt salt as a catalyst within a very short reaction period for the first time. Furthermore, nitrogen- and oxygen-containing heterocyclic compounds have been synthesized from these highly functionalized enaminones. Moreover, various control experiments, such as radical trapping reaction, along with a Hammett analysis with various types of substituents on the styrene ring unraveled the detailed mechanism of this reaction pathway. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index