1: 99 percent / 48 h / Heating 2: 90percent nitric acid, conc. H2SO4 / 2 h / 35 - 55 °C 3: HCl(gas) / methanol View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11342940', constants.ctx, '0')">sodium hydroxide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '1209320', constants.ctx, '0')">sodium azide</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '2037554', constants.ctx, '0')">sulfuric acid</a> <br /> <br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1209320', constants.ctx, '0')">sodium azide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '2037554', constants.ctx, '0')">sulfuric acid</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '605264', constants.ctx, '0')">1,2-dichloro-ethane</a> <br />T=5 - 23&deg;C;&nbsp;5&nbsp;h;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 66 percent / 90percent HNO₃ / 1 h / 60 &deg;C<br />2: 98 percent / sodium azide, 20percent oleum / 1,2-dichloro-ethane / 5 h / 5 - 23 &deg;C<br /> <br /> &nbsp;