Synthesis 2005(9): 1405-1420  
DOI: 10.1055/s-2005-865357
PAPER
© Georg Thieme Verlag Stuttgart · New York

Titanocene-Mediated Intramolecular Radical Vinylations

Dominique Leca, Kai Song, Matthias Albert, Monica Grangeio Gonçalves, Louis Fensterbank*, Emmanuel Lacôte*, Max Malacria*
Laboratoire de chimie organique (UMR CNRS 7611), Université Pierre et Marie Curie, 4 Place Jussieu, B. 229, 75005 Paris, France
Fax: +33(1)44277360; e-Mail: louis.fensterbank@upmc.fr; e-Mail: lacote@ccr.jussieu.fr; e-Mail: max.malacria@upmc.fr;
Further Information

Publication History

Received 28 February 2005
Publication Date:
02 May 2005 (online)

Abstract

A new titanium-mediated domino intramolecular radical vinylation is described. It relies on the radical β-elimination of sulf­oximyl and phosphinoyl radicals, and leads efficiently to exo-alkylidene pyrrolidines with one stereogenic center β to the nitrogen. The reaction of phosphine oxides has been shown to effectively follow a radical pathway.