Oxidation of Alkyl Trifluoroborates: An Opportunity for Tin‐Free Radical Chemistry

Organotrifluoroborates have been oxidized by copper(II) salts and Dess–Martin periodinane via radical intermediates, as evidenced by TEMPO spin-trapping experiments. This new method of radical generation is compatible with functionalization and CC bond formation through Giese-type addition reactions (see scheme; DMSO=dimethyl sulfoxide, TEMPO=2,2,6,6-tetramethyl-1-piperidinyloxyl, free radical). Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.