Ag1Pd1 nanoparticles-reduced graphene oxide as highly efficient and recyclable catalyst for direct aryl C-H ole fination.

Ag1Pd1 nanoparticles-reduced graphene oxide as highly efficient and recyclable catalyst for direct aryl C-H olefination.
Chemistry. 2017 Sep 26;:
Authors: Hu Q, Liu X, Wang G, Wang F, Li Q, Zhang W
Abstract
The efficient and selective palladium-catalyzed activation of C-H bonds is of great importance for the construction of diverse bioactive molecules. Despite significant progress, the inability to recycle palladium catalysts and the need for additives impedes the practical applications of these reactions. Here, we report the use of Ag1Pd1 nanoparticles-reduced graphene oxide (Ag1Pd1-rGO) as highly efficient and recyclable catalyst for the chelation-assisted ortho C-H bond olefination of amides with acrylates in good yields with a broad substrate scope. The catalyst can be recovered and reused at least 5 times without losing their activity. A synergistic effect between the Ag and Pd atoms on the catalytic activity was found, and a plausible mechanism for the AgPd-rGO catalyzed C-H olefination is proposed. These findings suggest that search of Pd-based bimetallic alloy nanoparticles represent a new method to the development of superior recyclable catalysts for direct aryl C-H functionalization under mild conditions.
PMID: 28949081 [PubMed - as supplied by publisher]

Source: Chemistry - September 26, 2017 Category: Chemistry Authors: Hu Q, Liu X, Wang G, Wang F, Li Q, Zhang W Tags: Chemistry Source Type: research