Ring-closing olefin metathesis of 2,2'-divinylbiphenyls: a novel and general approach to phenanthrenes.
[reaction: see text] The ring-closing olefin metathesis (RCM) of 2,2'-divinylbiphenyls, using a second-generation RCM ruthenium-based catalyst, leads to differently substituted phenanthrenes in quantitative yield under very mild reaction conditions, independent of both nature and position of the groups present on the biphenyl moiety.
Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, 56126 Pisa, Italy. iuliano@dcci.unipi.it
Anna
A
Iuliano
Paolo
P
Piccioli
Davide
D
Fabbri