bis(cyclopentadienyl)titanium dichloride; manganese in tetrahydrofuran 0.833333 h; Inert atmosphereReflux;

N-chloro-succinimide; PhSNH-t-Bu; 1,8-diazabicyclo[5.4.0]undec-7-ene in dichloromethane T=0°C; 1 h;

RuCl(PPh3)3(1+)*PF6(1-) Heating;

1: 73 percent / Zn/Ag / diethyl ether / 2.5 h / Heating 2: 43 percent / Bu3P / tetrahydrofuran / 18 h / Heating 3: n-Bu3SnH, bistriphenyltin / toluene / 1) -78 deg C, irradiation, overnight, 2) up to r. t., 6-8 h View Scheme

carbon tetrabromide; triphenylphosphine in dichloromethane

1.1: 90 percent / CCl4; Ph3P / CH2Cl2 / 16 h / 20 °C 2.1: MeLi*LiBr / hexamethylphosphoric acid triamide; diethyl ether / 0.05 h / 0 °C 2.2: CuBr*Me2S / hexamethylphosphoric acid triamide; diethyl ether; various solvent(s) / 0.05 h / 0 °C 2.3: 54 percent / diethyl ether; hexamethylphosphoric acid triamide; various solvent(s) / 1 h / -60 - -40 °C View Scheme

Sodium bromate; ruthenium trichloride in water; 1,2-dichloro-ethane T=70°C; 2.5 h;