1: H2 / 5percent Pt/C / tetrahydrofuran; ethanol / 1.67 h / 2585.7 Torr 2: 1 M aq. H2SO4 / tetrahydrofuran / 0.67 h / Heating View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: SOCl₂, DMF / toluene / 16 h / 80 &deg;C<br />2: 81 percent / Et₃N / tetrahydrofuran; toluene / 16 h / Ambient temperature<br /> <br /> &nbsp;