title: Manganese(III)-mediated cyclodimerization of a hydrazinyl derivative generating an unprecedented 1,2,3,5,6-substituted leuco-verdazyl ring.
abstract: The one-pot reaction of Mn(OAc)(3) with two equivalents of 6-(pyridine-2-ylhydrazonomethyl)phenol (Hphp) in methanol leads to a unique leuco-verdazyl-type ring. The remarkable cyclodimerization reaction is proposed to involve a number of one-electron oxidative steps mediated by Mn(3+) ions, as well as a very uncommon 1,2-radical aryl migration and a nucleophilic attack of the solvent, i.e. methanol.
authors.affiliation: State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
authors.forename: Jinkui
authors.initials: J
authors.lastname: Tang
authors.forename: Sanjit
authors.initials: S
authors.lastname: Nayak
authors.forename: José Sánchez
authors.initials: JS
authors.lastname: Costa
authors.forename: Arturo
authors.initials: A
authors.lastname: Robertazzi
authors.forename: Roberta
authors.initials: R
authors.lastname: Pievo
authors.forename: Ilpo
authors.initials: I
authors.lastname: Mutikainen
authors.forename: Olivier
authors.initials: O
authors.lastname: Roubeau
authors.forename: Simon J
authors.initials: SJ
authors.lastname: Teat
authors.forename: Patrick
authors.initials: P
authors.lastname: Gamez
authors.forename: Jan
authors.initials: J
authors.lastname: Reedijk