A practical and highly active ruthenium-based catalyst that effects the cross metathesis of acrylonitrile.
A series of Ru-based catalysts of general formula [(H2IMes)(Cl)2Ru(X)(A)] (A = benzylidene, salicylidene; X = PR3 (R = Cy, Ph, p-CF3C6H4), substituted (3-Br, 4-Ph) pyridines; H2IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazolidin-2-yl) were tested on their efficiency in cross metathesis of acrylonitrile and allylbenzene. Catalyst [(H2IMes)(3-Br-py)2(Cl)2Ru=CHPh], prepd. from [(H2IMes)(PCy3)(Cl)2Ru=CHPh] and 3-bromopyridine, exhibited best performance. ROMP of cyclooctadiene was also studied. [on SciFinder(R)]