Luna Costales, AmparoHerrera García, FernandoAlmendros Requena, Pedro2025-01-092025-01-092020-11-24Herrera Fernando, Luna Amparo, Almendros Pedro. Visible-Light-Mediated Ru-Catalyzed Synthesis of 3-(Arylsulfonyl)but-3-enals via Coupling of α-Allenols with Diazonium Salts and Sulfur Dioxide. Org. Lett. 2020 22 (24), 9490-9494.1523-706010.1021/acs.orglett.0c03482https://hdl.handle.net/20.500.14352/113575CCDC 1900824 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/data_request/cif, or by emailing data_request@ccdc.cam.ac.uk, or by contacting The Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax: +44 1223 336033.The first coupling of α-allenols, sulfur dioxide, and arenediazonium salts is presented. The three-component reaction which is promoted by visible light can be easily accomplished using DABSO as a sulfur dioxide surrogate in the presence of a photoredox catalyst. In this manner, a broad range of electron-rich and electron-deficient aryl substituents are well accommodated in the sulfonylation–rearrangement cascade to afford the 2,2-disubstituted 3-(arylsulfonyl)but-3-enals in reasonable yields. Based on control experiments, a radical mechanism which does imply 1,2-aryl migration has been proposed.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal article1523-7052https://pubs.acs.org/doi/10.1021/acs.orglett.0c0348233232168https://pubmed.ncbi.nlm.nih.gov/33232168/open access547Chemical reactionsElectromagnetic radiationGroup 16 compoundsOxidesSaltsQuímica orgánica (Química)2306 Química Orgánica2306.14 Química de Los Organosulfurados