A Diastereoselective Intermolecular Heck Reaction of 1,3-Dioxepins
作者:Christopher G. Nasveschuk、Jeffrey D. Frein、Nathan T. Jui、Tomislav Rovis
DOI:10.1021/ol702294u
日期:2007.11.1
A highly diastereoselective intermolecularHeckreaction of 1,3-dioxepins is reported. Substitution at both the 2- and 4-positions of the dioxepin directs the Pd coordination and subsequent olefin insertion to provide the trans-disubstituted adduct in good yield and high diastereoselectivity. Chemoselective Heckreaction occurs at the dioxepin alkene in the presence of other olefinic functional groups