Sc(OTf)3-Catalyzed Diastereoselective Formal [3+2] Cycloaddition Reactions of Alkynylcyclopropane Ketones with Electron-Rich Aromatic Aldehydes to Yield 2,5-trans-Tetrahydrofurans

Article abstract of DOI:10.1002/ejoc.201600233

In contast to the general [4+2] cycloaddition reactions of alkynylcyclopropane ketones reported in the literature, we report herein a Sc(OTf)₃-catalyzed formal intermolecular [3+2] cycloaddition reaction of alkynylcyclopropane ketones with elec