Radical Perfluoroalkylation Enabled by a Catalytically Generated Halogen Bonding Complex and Visible Light Irradiation
作者:Tarannum Tasnim、Calvin Ryan、Miranda L. Christensen、Christopher J. Fennell、Spencer P. Pitre
DOI:10.1021/acs.orglett.1c04139
日期:2022.1.14
chemistry. This report describes the use of a substituted hydroquinone catalyst to promote radical perfluoroalkylation reactions. Mechanistic studies indicate that the reaction is initiated through formation of a visible light-absorbing halogen bonding complex between the hydroquinone catalyst and the perfluoroalkyl halide radical precursor.
Light-mediated iodoperfluoroalkylation of alkenes/alkynes catalyzed by chloride ions: role of halogen bonding
作者:Redouane Beniazza、Lionel Remisse、Damien Jardel、Dominique Lastécouères、Jean-Marc Vincent
DOI:10.1039/c8cc02765j
日期:——
deoxygenated methanol solutions containing catalytic amounts of NaCl or Bu4NCl. Preliminary mechanistic studies indicate that the light-promoted homolytic cleavage of the Rf–I bond that initiates the reaction is facilitated by the halogenbonding interaction between RfI and chloride ions.
描述了用于烯烃/炔烃的碘全氟烷基化的创新方法。这些反应,包括烯烃的碘三氟甲基化,在低强度的UVA辐射下,在含有催化量的NaCl或Bu 4 NCl的脱氧甲醇溶液中,非常有效地进行。初步的机理研究表明,R f I和氯离子之间的卤素键相互作用促进了引发反应的R f -I键的光促进均裂。