cyclohexene; palladium dihydroxide in ethanol 0.5 h; Heating;

<b>Multi-step reaction with 3 steps<br /> </b>1: ZnCl₂, HCl / diethyl ether / 2 h / 0 &deg;C<br />2: H₂O / 0.5 h / Heating<br />3: 1) potassium 3,4-dibenzyloxybenzoate, 2) aq. KOH / 1) 160 deg C, 8 h, 2) MeOH, reflux<br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: 93 percent / KMnO₄ / acetone; H₂O / 6.5 h / Heating<br />2: 98 percent / SOCl₂, DMF / 6 h / Heating<br />3: 60 percent / pyridine / diethyl ether / 24 h / 0 &deg;C<br />4: 1) potassium 3,4-dibenzyloxybenzoate, 2) aq. KOH / 1) 160 deg C, 8 h, 2) MeOH, reflux<br /> <br /> &nbsp;