title: Aluminum Hydride Catalyzed Hydroboration of Alkynes.
abstract: An aluminum-catalyzed hydroboration of alkynes using either the commercially available aluminum hydride DIBAL-H or bench-stable Et3Al⋅DABCO as the catalyst and H-Bpin as both the boron reagent and stoichiometric hydride source has been developed. Mechanistic studies revealed a unique mode of reactivity in which the reaction is proposed to proceed through hydroalumination and σ-bond metathesis between the resultant alkenyl aluminum species and HBpin, which acts to drive turnover of the catalytic cycle.
authors.affiliation: University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburg, EH9 3FJ, UK.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Bismuto
authors.affiliation: University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburg, EH9 3FJ, UK.
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Thomas
authors.affiliation: University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburg, EH9 3FJ, UK.
authors.forename: Michael J
authors.identifier: 0000-0003-0664-2891
authors.initials: MJ
authors.lastname: Cowley
keywords: aluminium; homogeneous catalysis; hydroboration; main-group chemistry; synthetic methods