1: 2-amino-1-pyrroline hydrochloride With sodium methylate in ethanol T=20°C; 0.0833333 h; 2: 2-bromo-3-propoxy-propenal in ethanol T=20°C; 1 h; 3: With triethylamine in chloroform 3 h; Heating / reflux;

1: With sodium methylate in ethanol T=20°C; 1.08333 h; 2: With triethylamine in chloroform 3 h; Heating / reflux;