The enzyme acetylcholinesterase (AChE) is adsorbed on the surface of silver and gold nanoparticles, which is confirmed by SEM and FTIR measurements. From SEM micrographs, the enzyme looks like a thin membrane around nanoparticles. FTIR spectra of...
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Tetrahydroxydiboron (Bis‐boric Acid): a Versatile Reagent for Borylation, Hydrogenation, Catalysis, Radical Reactions and H2 Generation
Von Wiley-VCH zur Verfügung gestellt
Tetrahydroxydiboron, also named bis-boric acid, was synthesized for the first time by Warwik and Apple in 1955 as a white microcristalline solid upon reaction of B2Cl4 with water vapor. Its properties as a borylation agent, reductant (including transfer hydrogenation), catalyst, source of radical and generator of H2 upon catalyzed hydrolysis (with both H atom of H2 coming from water) are reviewed.
Abstract
Diboron compounds with a B−B bond, discovered with B2Cl4 a century ago, have been developed only since the turn of this century for catalyzed borylation reactions, mostly with the well-know reagent bis(binacolato)diboron, (B2pin2). On the other hand, chemistry of tetrahydroxydiboron (THDB), also named bis-boric acid, is relatively underdeveloped. In this review, the properties of THDB as a borylation, reductant (including transfer hydrogenation), catalyst, source of radicals and generator of H2 from water upon hydrolysis are summarized.
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