1: Ph-SO2-CH(F)-P(O)(OEt)2 With lithium hexamethyldisilazane in tetrahydrofuran T=-78°C; 0.333333 h; 2: benzaldehyde in tetrahydrofuran T=-78 - -40°C; 2 h;

1: 92 percent / oxone / methanol; H2O / 4 h / 20 °C 2: 85 percent / LHMDS; Selectfluor / tetrahydrofuran; dimethylformamide / -78 - 0 °C 3: 85 percent / LHMDS / tetrahydrofuran / 1.5 h / -78 - -30 °C View Scheme

1: 85 percent / LHMDS; Selectfluor / tetrahydrofuran; dimethylformamide / -78 - 0 °C 2: 85 percent / LHMDS / tetrahydrofuran / 1.5 h / -78 - -30 °C View Scheme

1: 90 percent / AIBN / toluene / 4 h / 85 °C 2: hydrogen peroxide; NaOH / Pd(PPh3)4 / tetrahydrofuran; H2O / 9 h / 20 °C View Scheme

1: 90 percent / AIBN / toluene / 4 h / 85 °C 2: 50 percent / hydrogen peroxide; NaOH / Pd(PPh3)4 / tetrahydrofuran; H2O / 9 h / 20 °C View Scheme