Visible light induced cooperative catalysis by 4CzIPN and Mg(NO3)2·6H2O to furnish C-P functionalization of alkenes and indoles

• Published in: Journal of catalysis Vol. 438; p. 115710
• Main Authors: Banu, Saira, Kumari, Saloni, Roy, Souvik, Kundu, Sabuj
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01.10.2024
• Subjects: Cooperative catalysis; Lewis acid; P-centered radical; Phosphorylation; Photocatalysis; Proton-coupled electron transfer (PCET); Lewis acid; Cooperative catalysis; Phosphorylation; P-centered radical; Photocatalysis; Proton-coupled electron transfer (PCET)
• ISSN: 0021-9517
• DOI: 10.1016/j.jcat.2024.115710

4CzIPN-Mg(NO3)2·6H2O Cooperative catalysis initiated C-P bond formations via PCET. [Display omitted] Carbon-carbon or carbon-heteroatom bond formation from simple substrates using photoredox-Lewis acid dual catalytic systems is an intriguing area of research. Herein, an expedient photocatalytic strategy for selective C-P bond formation by employing 4CzIPN-Mg(NO3)2·6H2O mediated cooperative catalysis is reported. Following this versatile protocol, various organo-phosphorus compounds like phosphorylated oxindoles, malononitriles, malonates, coumarin esters, and indoles were effectively synthesized. This visible-light-promoted transition-metal-free method originated from the synergistic interaction of 4CzIPN-Mg(NO3)2·6H2O and substrates. Control experiments and other mechanistic studies were carried out to understand this cooperative photocatalytic process.