G. Dyker et al., SYNTHESIS OF POLYCYCLIC-HYDROCARBONS BY PALLADIUM-CATALYZED CROSS-COUPLING REACTIONS OF VINYLIC BROMIDES WITH DIPHENYLACETYLENE, Chemische Berichte, 130(2), 1997, pp. 261-265
Vinylic bromides of type 1 undergo cross-coupling reactions with diphe
nylacetylene (5) leading to various polycyclic hydrocarbons. The ratio
of the 1:1 to the 1:2 products can readily be controlled by varying t
he reaction conditions.