title: Imidazolinium salts as catalysts for the ring-opening alkylation of meso epoxides by alkylaluminum complexes.
abstract: [reaction: see text] Imidazolinium salts and their N-heterocyclic carbene (NHC) derivatives catalyze the alkylation of a variety of meso epoxides in the presence of triethylaluminum (yield = 70-90%), under mild conditions. Imidazolinium salts are better catalysts than their NHC derivatives but can lead to dimerization side reactions under extended reaction time. Preformed NHC.AlEt(3) complexes and Wanzlick-type olefins, which are dimers of free NHCs, are also catalysts for this reaction.
authors: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
authors: H
authors: H
authors: Zhou
authors: E J
authors: EJ
authors: Campbell
authors: S T
authors: ST
authors: Nguyen