triphenylphosphine; diethylazodicarboxylate in tetrahydrofuran; benzene 24 h; Ambient temperature;

<b>Multi-step reaction with 2 steps<br /> </b>1: 64 percent / pyridine / 20 h / Ambient temperature<br />2: 95 percent / KOH / methanol / 1 h / 60 &deg;C<br /> <br /> &nbsp;