1.1: 1.03 g / N,N-dimethylaminoethanol / 8 h / 80 °C 2.1: 69 percent / Et3N; trichlorosilane / benzene / 0.17 h / 20 °C 3.1: Co2(CO)8 / CH2Cl2 / 0.5 h / 0 °C 3.2: BF3*Et2O / CH2Cl2 / 0.17 h / -78 - 0 °C 3.3: 74 percent / CAN / methanol / 0.5 h / 0 °C 4.1: K2CO3 / methanol / 1 h / 20 °C 5.1: NaIO4 / RuO2*xH2O / H2O; CCl4 / 8 h / 20 °C View Scheme

1.1: 1.03 g / N,N-dimethylaminoethanol / 8 h / 80 °C 2.1: 69 percent / Et3N; trichlorosilane / benzene / 0.17 h / 20 °C 3.1: Co2(CO)8 / CH2Cl2 / 0.5 h / 0 °C 3.2: BF3*Et2O / CH2Cl2 / 0.17 h / -78 - 0 °C 3.3: 74 percent / CAN / methanol / 0.5 h / 0 °C 4.1: K2CO3 / methanol / 1 h / 20 °C View Scheme