benzylidene[1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene] dichloro (tricyclohexylphosphine)ruthenium in dichloromethane ring-closing metathesis; 6 h; Heating;

bis(tricyclohexylphosphine)benzylidene ruthenium(IV) dichloride in dichloromethane ring closing metathesis; 24 h; Heating;