title: Participation of the alpha,alpha'-diiminopyridine ligand system in reduction of the metal center during alkylation.
abstract: The reaction of [[2,6-(i-Pr)(2)PhN=C(Me)](2)(C(5)H(3)N)]MnCl(2) with alkylating agents formed a dinuclear Mn(I) derivative via ligand reductive coupling. In the case of the trivalent Cr analogue, a similar reaction afforded reduction toward Cr(II) but also alkylation at the pyridine ring para position followed by an unprecedented cycloaddition that generated a tricyclic system.
authors.affiliation: Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada.
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Sugiyama
authors.forename: Ghazar
authors.initials: G
authors.lastname: Aharonian
authors.forename: Sandro
authors.initials: S
authors.lastname: Gambarotta
authors.forename: Glenn P A
authors.initials: GP
authors.lastname: Yap
authors.forename: Peter H M
authors.initials: PH
authors.lastname: Budzelaar