title: Ruthenium-catalyzed cycloaddition of propargylic alcohols with phenol derivatives via allenylidene intermediates: catalytic use of the allenylidene ligand as the C(3) unit.
abstract: Novel ruthenium-catalyzed cycloaddition of propargylic alcohols with 2-naphthols and phenols bearing electron-donating groups via allenylidene intermediates has been developed to give the corresponding 1H-naphtho[2,1-b]pyrans and 4H-1-benzopyrans, respectively, in moderate to excellent yields with complete regioselectivity.
authors.affiliation: Department of Energy and Hydrocarbon Chemistry, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Nishibayashi
authors.forename: Youichi
authors.initials: Y
authors.lastname: Inada
authors.forename: Masanobu
authors.initials: M
authors.lastname: Hidai
authors.forename: Sakae
authors.initials: S
authors.lastname: Uemura