DBU-promoted ring-opening reactions of multi-substituted donor–acceptor cyclopropanes: access to functionalized chalcones with a quaternary carbon group†
Abstract
A convenient and straightforward strategy to synthesize Z-configuration chalcones with alkylcyanoacetate subunits via DBU-promoted ring-opening reactions of multi-substituted D–A cyclopropanes has been developed. This reaction did not require a transition metal catalyst and extra solvent, and haloalkanes acted as both an alkylation reagent and solvent.
- This article is part of the themed collection: Synthetic methodology in OBC