Scope of the metathesis reaction.

^aReaction conditions for homodimerization: styrene (1.0 eq, 0.10 M) in DCM, catalyst 2 (1 mol%) and catalyst PCf (1 mol%), 40 °C, 12 h, N₂, 420 nm.

^bReaction conditions for cross-coupling reaction of styrene derivatives with cis-2-butene-1,4-diacetate: styrene (1.0 eq, 0.20 M) in DCM, cis-2-butene-1,4-diacetate (2.4 eq), catalyst 2 (5 mol%), catalyst PCa (5 mol%), 40 °C, 24 h, N₂, 420 nm.

^cReaction conditions for cross-coupling of styrene derivates with 5-hexenyl-1-acetate: styrene (3.0 eq), 5-hexenyl-1-acetate (1.0 eq, 0.18 M) in DCM, catalyst PCa (5 mol%), catalyst 2 (5 mol%), 40 °C, 24 h, N₂, 420 nm.

^dReaction conditions for cross-coupling of styrene derivates with acrylate: styrene derivatives (1.0 eq, 0.05 M) in DCM, alkyl acrylate (2.0 to 5.0 eq), catalyst 2 (2 mol%), catalyst PCf (5 mol%), 40 °C, 24 h, N₂, 420 nm.

^eConversion and Z : E ratio are calculated from NMR spectra of the crude reaction mixture.

^fIsolated yields.