hydrogen; palladium on activated charcoal in ethyl acetate

<b>Multi-step reaction with 2 steps<br /> </b>1: 1.) xylene, reflux, 5 h, 2.) xylene, reflux, 15 h<br />2: 60 percent / concd. sulfuric acid, nitric acid / 2 h / 10 &deg;C<br /> <br /> &nbsp;