title: Oxidative Annulation of Arenecarboxylic and Acrylic Acids with Alkynes under Ambient Conditions Catalyzed by an Electron-Deficient Rhodium(III) Complex.
abstract: It has been established that an electron-deficient Cp(E) rhodium(III) complex catalyzes the oxidative [4+2] annulation of substituted arenecarboxylic and acrylic acids with alkynes under ambient conditions (at RT-40 °C, under air) without using excess amounts of substrates to produce the corresponding substituted isocoumarins and α-pyrones in high yields. Minor modification of reaction conditions depending on the coordination ability of alkynes realized the high efficiency.
authors.affiliation: Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.
authors.forename: Eiji
authors.initials: E
authors.lastname: Kudo
authors.affiliation: Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan. yshibata@apc.titech.ac.jp.
authors.forename: Yu
authors.initials: Y
authors.lastname: Shibata
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo, 184-8588, Japan.
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Yamazaki
authors.affiliation: Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Masutomi
authors.affiliation: Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.
authors.forename: Yuta
authors.initials: Y
authors.lastname: Miyauchi
authors.affiliation: Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.|Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo, 184-8588, Japan.
authors.forename: Miho
authors.initials: M
authors.lastname: Fukui
authors.affiliation: Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.
authors.forename: Haruki
authors.initials: H
authors.lastname: Sugiyama
authors.affiliation: Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.
authors.forename: Hidehiro
authors.initials: H
authors.lastname: Uekusa
authors.affiliation: Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan.|Department of Chemistry, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Satoh
authors.affiliation: Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Miura
authors.affiliation: Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan. ktanaka@apc.titech.ac.jp.|Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo, 184-8588, Japan. ktanaka@apc.titech.ac.jp.
authors.forename: Ken
authors.initials: K
authors.lastname: Tanaka
keywords: alkynes; annulation; isocoumarins; rhodium; α-pyrones