SbF3 T=150 - 160°C; 2 h; Yield given;

1: SbF3 / 2 h / 150 - 160 °C 2: 98 percent / H2O2; H2O / acetic acid / 3 h / 80 - 88 °C 3: 84 percent / H2SO4*SO3 / CH2Cl2 / 20 h / 0 - 42 °C View Scheme

1: SbF3 / 2 h / 150 - 160 °C 2: 98 percent / H2O2; H2O / acetic acid / 3 h / 80 - 88 °C 3: 79 percent / H2SO4*SO3 / CH2Cl2 / 1.5 h / 20 °C 4: 92 percent / acetonitrile / 1.5 h / 60 °C View Scheme

1: SbF3 / 2 h / 150 - 160 °C 2: 98 percent / H2O2; H2O / acetic acid / 3 h / 80 - 88 °C View Scheme

<b>Multi-step reaction with 3 steps<br /> </b>1: 0.58 h / 264 - 282 &deg;C<br />2: NaOH / methanol / 12 h / Heating<br />3: LiH / dimethylformamide / -60 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: 79 percent / tetrahydrothiophene 1,1-dioxide / 2.5 h / 85 - 150 &deg;C<br />2: 0.58 h / 264 - 282 &deg;C<br />3: NaOH / methanol / 12 h / Heating<br />4: LiH / dimethylformamide / -60 &deg;C<br /> <br /> &nbsp;