Dual Iminium- and Lewis Base Catalyzed Morita-Baylis-Hillman Reaction on Cyclopent-2-enone
Riccardo Innocenti, Gloria Menchi, Andrea Trabocchi*
*Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy, Email: andrea.trabocchiunifi.it
R. Innocenti, G. Menchi, A. Trabocchi, Synlett, 2018, 29, 820-824.
DOI: 10.1055/s-0036-1591521 (free Supporting Information)
see article for more reactions
Iminium catalysis of the challenging Morita-Baylis-Hillman reaction of cyclopenten-2-one provides allylic alcohols in excellent yields. Experimental evidence shows that secondary amines act as co-catalysts activating the enone moiety towards the nucleophilic attack at the β-position by DABCO as the Lewis base catalyst.
see article for more examples