ruthenium(tricyclohexil phosphane)(CHPh)(C3H2N2(mesityl)2)Cl2 in dichloromethane T=40°C; 2 h;

Hg(OTf)2 in toluene T=20°C; 0.166667 h;

palladium diacetate; formic acid; triphenylphosphine in N,N-dimethyl-formamide T=60 - 70°C; Hydrogenolysis;

1.1: 90 percent / K2CO3 / Pd(PPh3)4 / tetrahydrofuran; H2O / 24 h / Heating 2.1: 73 percent / benzyltrimethylammonium tribromide / CH2Cl2; methanol / 1 h / 20 °C 3.1: 94 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 4.1: n-BuLi / tetrahydrofuran; hexane / 5 h / -78 °C 4.2: hexane; tetrahydrofuran / 1 h / -50 °C 4.3: 70 percent / HCl / tetrahydrofuran; hexane / 0.17 h / 20 °C 5.1: 81 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 6.1: 100 percent / (N,N'-Mes2-2,3-dihydroimidazol-2-yl)Ru=CHPh(PCy3)Cl2 / CH2Cl2 / 2 h / 40 °C View Scheme

1.1: 90 percent / K2CO3 / Pd(PPh3)4 / tetrahydrofuran; H2O / 24 h / Heating 2.1: 73 percent / benzyltrimethylammonium tribromide / CH2Cl2; methanol / 1 h / 20 °C 3.1: 94 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 4.1: n-BuLi / tetrahydrofuran; hexane / 5 h / -78 °C 4.2: hexane; tetrahydrofuran / 1 h / -50 °C 4.3: 70 percent / HCl / tetrahydrofuran; hexane / 0.17 h / 20 °C 5.1: 81 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 6.1: 100 percent / (N,N'-Mes2-2,3-dihydroimidazol-2-yl)Ru=CHPh(PCy3)Cl2 / CH2Cl2 / 2 h / 40 °C View Scheme

1.1: 73 percent / benzyltrimethylammonium tribromide / CH2Cl2; methanol / 1 h / 20 °C 2.1: 94 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 3.1: n-BuLi / tetrahydrofuran; hexane / 5 h / -78 °C 3.2: hexane; tetrahydrofuran / 1 h / -50 °C 3.3: 70 percent / HCl / tetrahydrofuran; hexane / 0.17 h / 20 °C 4.1: 81 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 5.1: 100 percent / (N,N'-Mes2-2,3-dihydroimidazol-2-yl)Ru=CHPh(PCy3)Cl2 / CH2Cl2 / 2 h / 40 °C View Scheme

1.1: 94 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 2.1: n-BuLi / tetrahydrofuran; hexane / 5 h / -78 °C 2.2: hexane; tetrahydrofuran / 1 h / -50 °C 2.3: 70 percent / HCl / tetrahydrofuran; hexane / 0.17 h / 20 °C 3.1: 81 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 4.1: 100 percent / (N,N'-Mes2-2,3-dihydroimidazol-2-yl)Ru=CHPh(PCy3)Cl2 / CH2Cl2 / 2 h / 40 °C View Scheme

1.1: n-BuLi / tetrahydrofuran; hexane / 5 h / -78 °C 1.2: hexane; tetrahydrofuran / 1 h / -50 °C 1.3: 70 percent / HCl / tetrahydrofuran; hexane / 0.17 h / 20 °C 2.1: 81 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 3.1: 100 percent / (N,N'-Mes2-2,3-dihydroimidazol-2-yl)Ru=CHPh(PCy3)Cl2 / CH2Cl2 / 2 h / 40 °C View Scheme

1: 81 percent / n-BuLi / hexane; tetrahydrofuran / 24 h / 20 °C 2: 100 percent / (N,N'-Mes2-2,3-dihydroimidazol-2-yl)Ru=CHPh(PCy3)Cl2 / CH2Cl2 / 2 h / 40 °C View Scheme

potassium; potassium iodide; magnesium chloride in tetrahydrofuran 12 h; Heating;