Table 1. Synthesis of Tetrasubstituted Olefins via Cross-Coupling and Semihydrogenation.


20 mol% catalyst was used.
50 mol% catalyst was used.
5 mol% catalyst was used for 42 h.
During the cross-coupling, most of the silyl ether was cleaved and was reformed using TBSCl, imidazole and DMAP (10–20 mol%) in CH2Cl2 at r.t. The yields refer to combined yields over two steps.