title: CeCl(3) x 7H(2)O-NaI catalyzed hydrooxacyclization of unsaturated 3-hydroxy esters.
abstract: [reaction: see text] Cerium(III) chloride heptahydrate and sodium iodide in boiling acetonitrile promote cyclization of 3-hydroxyalkenoic acids esters giving 5-substituted tetrahydrofuranacetic acid esters and 6-substituted tetrahydropyranacetic acid esters in fair to good yield and with complete retention of the absolute configuration of the starting 3-hydroxy ester.
authors.affiliation: Dipartimento di Chimica Organica A. Mangini, Alma Mater Studiorum, Università di Bologna, Italy.
authors.forename: Emanuela
authors.initials: E
authors.lastname: Marotta
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Foresti
authors.forename: Tommaso
authors.initials: T
authors.lastname: Marcelli
authors.forename: Francesca
authors.initials: F
authors.lastname: Peri
authors.forename: Paolo
authors.initials: P
authors.lastname: Righi
authors.forename: Noemi
authors.initials: N
authors.lastname: Scardovi
authors.forename: Goffredo
authors.initials: G
authors.lastname: Rosini