ammonia; magnesium sulfate in methanol Ambient temperature;

<b>Multi-step reaction with 2 steps<br /> </b>1: 51 percent / potassium, t-butyl alcohol / 15 &deg;C<br />2: 91 percent / 70percent HF/pyridine / CH₂Cl₂ / 3 h / Ambient temperature<br /> <br /> &nbsp;