1: (i) Et3N, ClCO2Et, THF, (ii) NaN3, H2O, (iii) /BRN= 385737/, AcOH 2: aq. HCl View Scheme

1: (i) Et3N, ClCO2Et, THF, (ii) NaN3, H2O, (iii) /BRN= 385737/, AcOH 2: aq. HCl 3: methanol; diethyl ether View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11342940', constants.ctx, '0')">sodium hydroxide</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1098229', constants.ctx, '0')">methanol</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '3587155', constants.ctx, '0')">water</a> <br /> <br /> &nbsp;

<b>Multi-step reaction with 4 steps<br /> </b>1: POCl₃ / pyridine<br />2: NH₃, H₂S / methanol<br />3: ethanol<br />4: NaOH / methanol; H₂O<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: NH₃, H₂S / methanol<br />2: ethanol<br />3: NaOH / methanol; H₂O<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: ethanol<br />2: NaOH / methanol; H₂O<br /> <br /> &nbsp;