ammonia; sodium in diethyl ether T=-78°C; 0.5 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: organotin phosphate condensates (OPC) / hexane / 3 h / Heating<br />2: 1.) CH₂Cl₂, N,N-dimethylformamide dimethylacetal, reflux, 12 h, 2.) acetic anhydride, reflux, 1 h<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 1M NaOH / methanol / 0.08 h<br />2: 1.) CH₂Cl₂, N,N-dimethylformamide dimethylacetal, reflux, 12 h, 2.) acetic anhydride, reflux, 1 h<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: organotin phosphate condensates (OPC) / hexane / 3 h / Heating<br />2: 1.) CH₂Cl₂, N,N-dimethylformamide dimethylacetal, reflux, 12 h, 2.) acetic anhydride, reflux, 1 h<br /> <br /> &nbsp;