title: Stereoselective [3,3]-sigmatropic rearrangement promoted by the metal [1,3]-shift of binuclear Fischer carbene complexes.
abstract: Reaction of chiral homobinuclear Fischer chromium carbene complexes with allyl alcohol in the presence of NaH and the following oxidative demetalation gave alpha-allyl esters in up to 97% ee via [3,3]-sigmatropic rearrangement reaction promoted by the metal 1,3-shift. On the other hand, chiral heterobinuclear tungsten carbene complexes with arene chromium complexes afforded alpha-allyl-beta-hydroxy esters as a major product in up to 92/8 dr by the same reaction sequence.
authors.affiliation: Department of Chemistry, Faculty of Integrated Arts and Sciences, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
authors.forename: Ken
authors.initials: K
authors.lastname: Kamikawa
authors.forename: Atsushi
authors.initials: A
authors.lastname: Tachibana
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Shimizu
authors.forename: Kazuya
authors.initials: K
authors.lastname: Uchida
authors.forename: Masaru
authors.initials: M
authors.lastname: Furusho
authors.forename: Motokazu
authors.initials: M
authors.lastname: Uemura