1: 2-bromo-3-hydroxypropenal With toluene-4-sulfonic acid; isopropyl alcohol in cyclohexane T=80°C; 2: 3-Iminothiomorpholine hydrochloride With sodium methylate in ethanol T=20°C; 1 h; 3: With triethylamine in chloroform 2.5 h; Heating / reflux;

1: 2-bromo-3-hydroxypropenal With toluene-4-sulfonic acid in cyclohexane; isopropyl alcohol T=80°C; 2: 3-Iminothiomorpholine hydrochloride With sodium methylate in ethanol T=20°C; 1 h; 3: With triethylamine in chloroform 2.5 h; Heating / reflux;

1: With sodium methylate in methanol T=20°C; 1 h; 2: With triethylamine in chloroform 2.5 h; Heating / reflux;

1: With sodium methylate in methanol; ethanol T=20°C; 1 h; 2: With triethylamine in chloroform 2.5 h; Heating;