water; hydrogen bromide T=105°C; 17 h; Product distribution / selectivity;

<b>Multi-step reaction with 3 steps<br /> </b>1.1: water; methanol / 20 h / 40 &deg;C / Sealed tube<br />2.1: sulfuric acid / dichloromethane; water / 3.25 h / -10 - 0 &deg;C / Cooling with ice<br />2.2: pH 8 - 9<br />3.1: palladium on carbon / water; methanol / 5.75 h / 20 - 60 &deg;C<br /> <br /> &nbsp;