title: Catalytic intermolecular enal-alkyne [3 + 2] reductive cycloadditions.
abstract: A catalytic, intermolecular [3 + 2] reductive cycloaddition of enals and alkynes has been developed. The method provides a nickel-catalyzed strategy for combining two simple acyclic pi-systems into a five-membered ring product by effecting a net two-electron reduction of the starting materials mediated by triethylborane as the reducing agent. The use of a protic solvent is a key feature of the process.
authors.affiliation: Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA.
authors.forename: Ananda
authors.initials: A
authors.lastname: Herath
authors.forename: John
authors.initials: J
authors.lastname: Montgomery