1: piperidine 2: H2 / Raney-Ni / ethanol 3: (i) KOH, EtOH, (ii) (decarboxylation) View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: NaIO₄ / ethanol<br />2: Py<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: (i) aq. H₂O₂, AcOH, (ii) KOH, EtOH<br />2: NaIO₄ / ethanol<br />3: Py<br /> <br /> &nbsp;