1: With oxalyl dichloride in tetrahydrofuran; DMF (N,N-dimethyl-formamide) T=0 - 20°C; 3.25 h; 2: With ammonia in tetrahydrofuran; DMF (N,N-dimethyl-formamide); water T=0 - 5°C; 0.75 h;

diethyl ether; ammonia piperonylacrylic acid amide;