title: PhI(OAc)2 -mediated novel 1,3-dipolar cycloaddition of methylenecyclopropanes (MCPs), vinylidenecyclopropanes (VCPs), and methylenecyclobutane (MCB) with phthalhydrazide.
abstract: [structure: see text]. Iodobenzene diacetate-mediated reactions of methylenecyclopropanes 1, vinylidenecyclopropanes 2, and a methylenecyclobutane 3a with phthalhydrazide give the corresponding [3+2] cycloaddition products in good yields under mild conditions. In these reactions, phthalhydrazide was transformed to a 1,3-dipole intermediate in the presence of iodobenzene diacetate. A plausible reaction mechanism has been proposed.
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai, China.
authors.forename: Le-Ping
authors.initials: LP
authors.lastname: Liu
authors.forename: Jian-Mei
authors.initials: JM
authors.lastname: Lu
authors.forename: Min
authors.initials: M
authors.lastname: Shi