water; triethylamine in tetrahydrofuran 0.25 h; Ambient temperature;

<b>Multi-step reaction with 3 steps<br /> </b>1: 70 percent / PCl₃, Et₃N / diethyl ether / 2 h / -10 - 20 &deg;C<br />2: 90 percent / H₂O / tetrahydrofuran / 2 h<br />3: 6 h / 60 - 70 &deg;C<br /> <br /> &nbsp;