Welwistatin Support Studies: Expansion and Limitation of Aryllead(IV) Coupling Reactions
作者:Jibo Xia、Lauren E. Brown、Joseph P. Konopelski
DOI:10.1021/jo071156l
日期:2007.8.31
target step involves lead-mediated arylation of sterically demanding aryl groups and carbon acid coupling partners in order to establish the highly congested tetracyclic core structure. Type 7 β-ketoesters and β-ketonitriles were successfully arylated with a variety of ortho- and meta-substituted aryllead compounds generated by a halogen−boron−lead exchange sequence. The enolates of compounds 15, 19