1: 78 percent / ammonia / ethanol / 5 h / 150 - 155 °C / Heating; sealed tube 2: 22.5 percent / methanolic HCl / ethanol / 6 h / Heating View Scheme

<b>Multi-step reaction with 4 steps<br /> </b>1: 22.5 percent / methanolic HCl / ethanol / 6 h / Heating<br />2: 54 percent / ethanol / 3 h / Heating<br />3: 86 percent / dioxane / 11 h / Heating<br />4: 69 percent / 2 h / Heating<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 14 percent / 2 h / Heating<br />2: 69 percent / 2 h / Heating<br /> <br /> &nbsp;

2&nbsp;h;&nbsp;&nbsp;Heating;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: 54 percent / ethanol / 3 h / Heating<br />2: 86 percent / dioxane / 11 h / Heating<br />3: 69 percent / 2 h / Heating<br /> <br /> &nbsp;

2&nbsp;h;&nbsp;&nbsp;Heating;&nbsp;<br /> &nbsp;