trichlorosilane; triethyl phosphite in tetrahydrofuran; toluene T=100°C; 2 h;

1: DBBN With iodine; magnesium in tetrahydrofuran; toluene T=60 - 75°C; 4 h; Inert atmosphere; 2: bis(3,5-dimethylphenyl)bromophosphine in tetrahydrofuran; toluene T=60°C; 3 h;

1: (R)-2,2'-bis(trifluoromethanesulfonyloxy)-1,1'-binaphthalene With Cl2Ni(1,2-bis(diphenylphosphino)ethane) in N,N-dimethyl-formamide 2: bis(3,5-dimethylphenyl)bromophosphine With 1,4-diaza-bicyclo[2.2.2]octane in N,N-dimethyl-formamide T=110°C;

1.1: HCl 2.1: O2 / benzene 3.1: Mg; I2 / tetrahydrofuran; toluene / 75 °C 3.2: 71 percent / tetrahydrofuran; toluene / 16 h / 60 °C 4.1: 96 percent / (EtO)3P; HSiCl3 / tetrahydrofuran; toluene / 2 h / 100 °C View Scheme

1.1: Mg; I2 / tetrahydrofuran; toluene / 75 °C 1.2: 71 percent / tetrahydrofuran; toluene / 16 h / 60 °C 2.1: 96 percent / (EtO)3P; HSiCl3 / tetrahydrofuran; toluene / 2 h / 100 °C View Scheme

1.1: O2 / benzene 2.1: Mg; I2 / tetrahydrofuran; toluene / 75 °C 2.2: 71 percent / tetrahydrofuran; toluene / 16 h / 60 °C 3.1: 96 percent / (EtO)3P; HSiCl3 / tetrahydrofuran; toluene / 2 h / 100 °C View Scheme

1.1: HCl 2.1: O2 / benzene 3.1: Mg; I2 / tetrahydrofuran; toluene / 75 °C 3.2: 71 percent / tetrahydrofuran; toluene / 16 h / 60 °C 4.1: 96 percent / (EtO)3P; HSiCl3 / tetrahydrofuran; toluene / 2 h / 100 °C View Scheme