A novel synthetic method for γ-butyrolactones is presented. The process involves high regioselectivity to afford γ-lactones. In cases of trichloroacetates of secondary allylic alcohols, high cis-selective cyclization is accomplished.
Atom Transfer Radical Cyclisations Mediated by the Grubbs Ruthenium Metathesis Catalyst
作者:Peter Quayle、David Fengas、Stuart Richards
DOI:10.1055/s-2003-41466
日期:——
The commercially available ruthenium carbene complex RuCl2(=CHPh)(PCy3)2 efficiently catalyses the cyclisation of halo alkenes to γ-lactones and γ-lactams.