Radical Additions of Xanthates to Vinyl Epoxides and Related Derivatives: A Powerful Tool for the Modular Creation of Quaternary Centers

An open relationship: The triethylborane/O2‐mediated addition of xanthates to vinyl epoxides and derivatives represents an efficient process to form carbon–carbon bonds. Complex structures can be rapidly assembled in a modular, convergent manner, under mild conditions, using readily available reagents (see scheme, Bn=benzyl). The formation of quaternary centers proved especially facile.