title: Lewis acid-catalyzed cascade reactions of arylmethylenecyclopropanes with 1,1,3-triarylprop-2-yn-1-ols or their methyl ethers.
abstract: Arylmethylenecyclopropanes 1 can react with 3-methoxy-1,3,3-triarylprop-1-yne 2 or 1,1,3-triarylprop-2-yn-1-ol 2-OH to give the corresponding functionalized methylenecyclobutene, cyclobutane, and cyclopropane derivatives in the presence of Lewis acid BF3.OEt2 under mild conditions. A plausible Meyer-Schuster rearrangement mechanism has been proposed.
authors.affiliation: School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Lu, Shanghai 200237, China.
authors.forename: Liang-Feng
authors.initials: LF
authors.lastname: Yao
authors.forename: Min
authors.initials: M
authors.lastname: Shi