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![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
Triphenylamine-Mediated Intramolecular Remote Cyano Migration via Electron Donor-Acceptor Complex Photoactivation
Shuangran Ji1, Xufeng Li2, Yue Wang1
1College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, P. R. China.
Abstract:
The photoactivation of electron donor-acceptor complexes has been developed as a renewable, selective, and multifunctional strategy to generate free radicals. Nevertheless, efforts to employ catalytic amounts of organic amines as electron donors in visible-light-promoted reactions are still at a nascent stage. Herein, a novel triarylamine-based electron donor-acceptor complex has been proposed for the successful construction of β-cyanosulfone, enabling a three-component olefinic difunctionalization of aryl thianthrenium salts, (DABCO)·(SO2)2, and cyanohydrins under visible light conditions through intramolecular 1,4-cyano migration. This strategy has excellent substrate tolerance and broad application prospects in the late modification of pharmaceutically active molecules and agrochemicals while simultaneously advancing the utilization of catalytic quantities of electron donors in photocatalytic electron donor-acceptor (EDA) complex-mediated catalytic systems.
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