title: Synthesis and reactivity of electron poor allenes: formation of completely organic frustrated Lewis pairs.
abstract: The synthesis of several electron poor allenes bearing electron withdrawing substituents is described and their use as Lewis acids in the field of frustrated Lewis pair (FLP) chemistry reported. At room temperature the combination of N-heterocyclic carbenes (NHC) with the allenes under study invariably afforded the corresponding Lewis adducts; however, at -78 °C this reaction is in most of the cases inhibited and kinetically induced organic FLPs are formed. Under these conditions the activation of S-S bonds in disulfides has been achieved in excellent yields.
authors.affiliation: Max-Planck-Institut für Kohlenforschung, Kaiser Wilhelm Platz 1, 45470-Mülheim an der Ruhr, Germany.
authors.forename: David
authors.initials: D
authors.lastname: Palomas
authors.forename: Sigrid
authors.initials: S
authors.lastname: Holle
authors.forename: Blanca
authors.initials: B
authors.lastname: Inés
authors.forename: Hans
authors.initials: H
authors.lastname: Bruns
authors.forename: Richard
authors.initials: R
authors.lastname: Goddard
authors.forename: Manuel
authors.initials: M
authors.lastname: Alcarazo