hydrogen; palladium on activated charcoal in hexane

<b>Multi-step reaction with 3 steps<br /> </b>1: tetrahydrofuran / 0.17 h / -78 &deg;C<br />2: 76 percent / In / tetrahydrofuran / -78 - 20 &deg;C<br />3: H₂O / W(CO)5(thf) / tetrahydrofuran / 120 h / 20 &deg;C<br /> <br /> &nbsp;