Redox Chemistry of a Hydroxyphenyl‐Substituted Borane

Abstract

Chemical reduction of a hydroxyphenyl-substituted borane triggers a sequential electron-and intramolecular hydrogen-atom-transfer process to afford a hydridoborate phenoxide dianion. On the other hand, hydrogen-atom abstraction of the borane leads to the isolation of a neutral borylated phenoxyl radical, which can be transformed to the corresponding benzoquinone borataalkene derivative by reduction with cobaltocene.

Control of Ligand pKa Values Tunes the Electrocatalytic Dihydrogen Evolution Mechanism in a Redox-Active Aluminum(III) Complex

“…Heyduk and co-workers showed that bis­(3,5-di tert -butyl-2-phenol)­amine ([ONO]­H 3 ) complexes of aluminum­(III) perform electron-transfer reactions with a variety of quinones (Scheme B), while Graves and co-workers studied doubly reduced α-diimine ligand complexes of aluminum­(III) that promote one-electron transfer in the presence of oxidants like AgCl (Scheme C) . In boron chemistry, phenoxide ligands have been observed to undergo reduction to a phenoxyl radical …”

Manuel M. Baizer Award: J.‐i. Yoshida / Luigi Tartufari International Award in Chemistry: L. de Cola and S.‐M. Peng / Priestley Medal: J. K. Barton / Honorary Doctorate: P. J. Stang

“…Peng’s research interests are in crystallography and inorganic chemistry, including the synthesis of molecular metal wires. He has reported in Chemistry—A European Journal on heteropentanuclear extended metal‐atom chains,2a and in Angewandte Chemie on the reduction of hydroxyphenyl‐substituted boranes 2b. Peng is on the International Advisory Board of the European Journal of Inorganic Chemistry…”