hydrogenchloride; hydrogen sulfide; titanium tetrachloride T=0 - 20°C; 24 h; Yield given;

<b>Multi-step reaction with 4 steps<br /> </b>1: tert-BuOK / toluene / 0.75 h / 75 &deg;C<br />2: 2-methyl-propan-2-ol / 1 h / 40 &deg;C<br />3: HCOOH / 2 h / Heating<br />4: 1.) O₃, CF₃COOH, 2.) Me₂S / 1.) CH₂Cl₂, CH₃OH, -60 deg C, 2.) CH₂Cl₂, CH₃OH, 0 deg C<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 56 percent / 8 molpercent RhCl(PPh₃)3 / acetonitrile; H₂O / 5 h / Heating<br />2: 1.) O₃, CF₃COOH, 2.) Me₂S / 1.) CH₂Cl₂, CH₃OH, -60 deg C, 2.) CH₂Cl₂, CH₃OH, 0 deg C<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: HCOOH / 2 h / Heating<br />2: 1.) O₃, CF₃COOH, 2.) Me₂S / 1.) CH₂Cl₂, CH₃OH, -60 deg C, 2.) CH₂Cl₂, CH₃OH, 0 deg C<br /> <br /> &nbsp;