Photochemical Sandmeyer‐type Halogenation of Arenediazonium Salts
Nardana Sivendran, Florian Belitz, Daniel Sowa Prendes, Ángel Manu Martínez, Rochus Schmid, Lukas J. Gooßen
Abstract
Trihalide salts were found to efficiently promote photochemical dediazotizing halogenations of diazonium salts. In contrast to classical Sandmeyer reactions, no metal catalysts are required to achieve high yields and outstanding selectivities for halogenation over competing hydridodediazotization. Convenient protocols are disclosed for synthetically meaningful brominations, iodinations, and chlorinations of diversely functionalized derivatives.
Topics & Concepts
HalogenationTrihalideChemistryCatalysisOrganic chemistryMetalPhotochemistryCombinatorial chemistryHalideCatalytic C–H Functionalization MethodsRadical Photochemical ReactionsOxidative Organic Chemistry Reactions