title: Gallium(III)- and calcium(II)-catalyzed Meyer-Schuster rearrangements followed by intramolecular aldol condensation or endo-Michael addition.
abstract: The first gallium- and calcium-catalyzed Meyer-Schuster rearrangements are described. Under substrate control, the incipient conjugated ketones can be trapped intramolecularly by β-keto esters or amides to yield cyclic products after aldol condensation or endo-Michael addition. An interesting additive effect that promotes the latter tandem process with calcium has been found.
authors.affiliation: Université Paris-Sud, ICMMO (UMR CNRS 8182), LabEx CHARM3AT, 91405 Orsay cedex, France. vincent.gandon@u-psud.fr.
authors.forename: M
authors.initials: M
authors.lastname: Presset
authors.forename: B
authors.initials: B
authors.lastname: Michelet
authors.forename: R
authors.initials: R
authors.lastname: Guillot
authors.forename: C
authors.initials: C
authors.lastname: Bour
authors.forename: S
authors.initials: S
authors.lastname: Bezzenine-Lafollée
authors.forename: V
authors.initials: V
authors.lastname: Gandon