title: New cyclization of 4-oxahepta-1,6-diynes bearing sulfur and selenium functional groups.
abstract: New cyclizations of 1-sulfanyl- and -selanyl-4-oxa-1,6-heptadiynes using sodium alkoxide or thiolates provided 4-alkoxymethyl-3-phenylsulfanyl- and 3,4-bis(sulfanylmethyl)furans in high yields.
authors.affiliation: Department of Chemistry, Faculty of Education, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan. yoshimae@gifu-u.ac.jp
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Yoshimatsu
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Watanabe
authors.forename: Eri
authors.initials: E
authors.lastname: Koketsu
mesh_terms: D003500:Cyclization; D005663:Furans / Q000737:chemistry; D007536:Isomerism; D015394:Molecular Structure; D055601:Organic Chemistry Phenomena; D012643:Selenium / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry*
chemical_list: D005663:Furans; D013455:Sulfur; D012643:Selenium