title: Imidazolinium salts as catalysts for the aza-Diels-Alder reaction.
abstract: Various easily accessible imidazolinium salts have been found to be capable of catalysing an aza-Diels-Alder reaction with a range of imines and Danishefsky's diene, giving the desired products in good to excellent yields. The influence of the counter-anions on the reactivity has been explored. These salts could contribute to the field of metal-free catalysis/organocatalysis.
authors.affiliation: Institut für Organische Chemie der Technischen Universität Clausthal, 38678, Clausthal-Zellerfeld, Leibnizstr. 6, Germany.
authors.forename: Václav
authors.initials: V
authors.lastname: Jurcik
authors.forename: René
authors.initials: R
authors.lastname: Wilhelm