title: Controlled β-protonation and [4+2] cycloaddition of enals and chalcones via N-heterocyclic carbene/acid catalysis: toward substrate independent reaction control.
abstract: A substrate-independent selective generation of enolates over homoenolate equivalents in NHC-catalyzed reactions of enals and chalcones is disclosed. Acid co-catalysts play vital roles in control of the reaction pathways, allowing for individual access to diverse products from identical substrates.
authors.affiliation: Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 637371, Singapore.
authors.forename: Zhenqian
authors.initials: Z
authors.lastname: Fu
authors.forename: Hui
authors.initials: H
authors.lastname: Sun
authors.forename: Shaojin
authors.initials: S
authors.lastname: Chen
authors.forename: Bhoopendra
authors.initials: B
authors.lastname: Tiwari
authors.forename: Guohui
authors.initials: G
authors.lastname: Li
authors.forename: Yonggui Robin
authors.initials: YR
authors.lastname: Chi