title: Platinum(II)-catalyzed generation and [3+2] cycloaddition reaction of α,β-unsaturated carbene complex intermediates for the preparation of polycyclic compounds.
abstract: Pt(II)-catalyzed generation of unsaturated carbene complex intermediates from various propargyl ether derivatives based on electrophilic activation of alkynes was realized. These in situ generated unsaturated carbene complexes undergo [3+2] cycloaddition reaction with various vinyl ethers, leading to efficient formation of indoles, naphthols, and benzofuran fused with a five-membered ring in high yields.
authors.affiliation: Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
authors.forename: Kodai
authors.initials: K
authors.lastname: Saito
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Sogou
authors.forename: Takuya
authors.initials: T
authors.lastname: Suga
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kusama
authors.forename: Nobuharu
authors.initials: N
authors.lastname: Iwasawa