1.1: lithium diisopropyl amide / hexane; tetrahydrofuran / 2 h / -78 °C / |Inert atmosphere 1.2: 2.5 h / -78 °C / |Inert atmosphere 2.1: hydrogenchloride / 1,4-dioxane; water / 1 h / 20 °C / |Inert atmosphere 2.2: 16 h / 20 °C / |Inert atmosphere 2.3: 6 h / 20 °C / |Inert atmosphere 3.1: lithium aluminium tetrahydride / diethyl ether / 0.75 h / 0 - 20 °C / |Inert atmosphere 4.1: triphenylphosphine; di-isopropyl azodicarboxylate / dichloromethane; tetrahydrofuran / 12 h / 0 - 20 °C / |Inert atmosphere 5.1: hydrogenchloride; sodium tetrahydroborate / ethanol / 16 h / -15 °C / |Inert atmosphere 6.1: trifluorormethanesulfonic acid / dichloromethane / 1 h / 0 - 20 °C / |Inert atmosphere 7.1: (SPY-5-31)-dichloro-(κ2(C,O)-(2-isopropyloxybenzylidene))(1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene)ruthenium / dichloromethane / 18 h / 40 °C / |Inert atmosphere 8.1: 5 palladium on charcoal; hydrogen / ethanol / 16 h / 20 °C View Scheme