LETTER	Synlett 2007: 1561-1564   DOI: 10.1055/s-2007-982548
© Georg Thieme Verlag Stuttgart · New York
An Efficient Route to Benzene and Phenol Derivatives via Ring-Closing Olefin Metathesis
Kazuhiro Yoshida*, Shingo Horiuchi, Noriyuki Iwadate, Fumihiro Kawagoe, Tsuneo Imamoto*
Department of Chemistry, Faculty of Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan Fax: +81(43)2902791; e-Mail: kyoshida@faculty.chiba-u.jp; e-Mail: imamoto@faculty.chiba-u.jp;
Received 31 January 2007

Abstract

Without the formation of inseparable regioisomers, ­various substituted phenol derivatives 2 and benzene derivatives 4 were prepared through RCM-tautomerization and RCM-dehydration protocols. A new synthetic route to precursors 1 and 3 enabled efficient access to these aromatic compounds.

Key words

annulations - metathesis - ring closure - ruthenium - ­tautomerism