1: 97 percent / lithium aluminum hydride / tetrahydrofuran / Heating 2: 99 percent / oxalyl chloride; triethylamine; DMSO / CH2Cl2 / 0.25 h / -78 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 1.036 g / CH₂Cl₂ / 2 h / 22 &deg;C<br />2: 64 percent / K₂CO₃ / Pd(PPh₃)4 / 1,2-dimethoxy-ethane; H₂O / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: DMF; oxalyl chloride / CH₂Cl₂ / 2 h / 22 &deg;C<br />2: 1.036 g / CH₂Cl₂ / 2 h / 22 &deg;C<br />3: 64 percent / K₂CO₃ / Pd(PPh₃)4 / 1,2-dimethoxy-ethane; H₂O / Heating<br /> <br /> &nbsp;