-pentoxide solution has been used as a base to synthesize [RuClPh(CO)(H2
)] from second-generation Grubbs metathesis catalyst, [RuCl2
)], (where H2
IMes is 1,3-dimethyl-4,5-dihydroimidazol-2-ylidene and PCy3
is tricyclohexylphosphine) and benzyl alcohol. This complex is a solid, air-stable and highly active isomerization catalyst.