Fig. 7: Catalytic performance of Cu4NC and derivatization of the B–C bond of vinylboronate ester E-4a.

a Large-scale synthesis of vinylboronate ester E-4a. b, c Synthesis of disubstituted E-alkenyl halides via halogenation reactions. d Construction of C − C bonds through Suzuki cross-coupling of vinylboronate ester and Ar-I. e Synthesis of (E)-(2-azidovinyl) benzene from a vinylboronate ester as substrate. f Exploration of the functional group derivatizations of trans-stilbenes via a method.