1: LAH 2: PCC 4: 98 percent / PhCH=RuCl2(PCy3)2 / CH2Cl2 / 6 h / 25 °C View Scheme

(SPY-5-31)-dichloro-(κ2(C,O)-(2-isopropyloxybenzylidene))(1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene)ruthenium in deuterated toluene T=29.84°C; Reagent/catalyst;