diethyl cyanophosphonate; triethylamine 1.) DMF, -20 deg C, 10 min, 2.) a) -20 deg C, 30 min, b) ambient temperature, 4 h; Yield given. Multistep reaction;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11323291', constants.ctx, '0')">sodium sulfide</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1098229', constants.ctx, '0')">methanol</a> <br />T=25&deg;C;&nbsp;4&nbsp;h;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 94 percent / Na, EtOH, H₂O / 12 h<br />2: 67 percent / Na₂S*9H₂O / methanol / 4 h / Ambient temperature<br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3587154', constants.ctx, '0')">ammonia</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3647881', constants.ctx, '0')">sodium</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '102391', constants.ctx, '0')">tetrahydrofuran</a> <br /> <br /> &nbsp;