title: One-pot transformation of Ph2P(O)-protected ethynes: deprotection followed by transition metal-catalyzed coupling.
abstract: Ph2P(O)-protected ethynes were successfully transformed to arylethynes in one-pot manner through t-BuOK-catalyzed deprotection followed by Sonogashira coupling with aryl halide. The arylethynes were obtained similarly by Ph2P(O)-deprotection, stannylation of the resulting terminal ethynes, and Migita-Kosugi-Stille coupling. Deprotection followed by intramolecular Eglinton coupling could be carried out in one-pot to provide cyclic butadiynes.
authors.affiliation: Department of Applied Chemistry, Okayama University of Science , Kita-ku, Okayama 700-0005, Japan.
authors.forename: Lifen
authors.initials: L
authors.lastname: Peng
authors.forename: Feng
authors.initials: F
authors.lastname: Xu
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Suzuma
authors.forename: Akihiro
authors.initials: A
authors.lastname: Orita
authors.forename: Junzo
authors.initials: J
authors.lastname: Otera