Boron‐Centered Lewis Superacid through Redox‐Active Ligands: Application in C−F and S−F Bond Activation
Laura Köring, Arne Stepen, Bernhard Birenheide, Simon Barth, Maxim Leskov, Roland Schoch, Felix Krämer, Frank Breher, Jan Paradies
Abstract
Abstract A series of redox‐responsive ferrocenyl‐substituted boranes and boronic esters were synthesized. Oxidation of the ferrocenyl ligand to the ferrocenium resulted in a drastic increase in the Lewis acidity beyond the strength of SbF 5 , which was investigated experimentally and computationally. The resulting highly Lewis acidic boron compounds were used for catalytic C−F and S−F bond activation.
Topics & Concepts
SuperacidLewis acids and basesBoronChemistryRedoxCatalysisOrganic chemistryOrganoboron and organosilicon chemistrySulfur-Based Synthesis TechniquesChemical Synthesis and Reactions