title: Chemoselective boronic ester synthesis by controlled speciation.
abstract: Control of boronic acid solution speciation is presented as a new strategy for the chemoselective synthesis of boronic esters. Manipulation of the solution equilibria within a cross-coupling milieu enables the formal homologation of aryl and alkenyl boronic acid pinacol esters. The generation of a new, reactive boronic ester in the presence of an active palladium catalyst also facilitates streamlined iterative catalytic C-C bond formation and provides a method for the controlled oligomerization of sp(2) -hybridized boronic esters.
authors.affiliation: WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL (UK).
authors.forename: James W B
authors.initials: JW
authors.lastname: Fyfe
authors.forename: Ciaran P
authors.initials: CP
authors.lastname: Seath
authors.forename: Allan J B
authors.initials: AJ
authors.lastname: Watson
mesh_terms: D001896:Boron Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D004952:Esters / Q000737:chemistry; D058105:Polymerization
chemical_list: D001896:Boron Compounds; D004952:Esters
keywords: boron; chemoselectivity; cross-coupling; oligomerization; palladium