pyrrolidine; butanone in benzene 4 h; Heating;

<b>Multi-step reaction with 3 steps<br /> </b>1: Et₃N / tetrahydrofuran / 1 h / 20 &deg;C<br />2: methanol; diethyl ether / 24 h / 20 &deg;C<br />3: sodium methoxide / methanol / 0.5 h / Heating<br /> <br /> &nbsp;