1.1: (SPY-5-31)-dichloro-(κ2(C,O)-(2-isopropyloxybenzylidene))(1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene)ruthenium / toluene / 2.5 h / 60 °C / |Inert atmosphere 2.1: palladium 10 on activated carbon; hydrogen / ethanol / 2.5 h / 20 °C / 750.08 Torr 3.1: tetrahydrofuran / 3 h / 20 °C / |Inert atmosphere 3.2: Raney nickel / 18 h / 750.08 Torr / |Inert atmosphere View Scheme