sodium acetate; acetic anhydride T=100°C; 2 h;

2,4,6-trimethyl-pyridine in N,N-dimethyl-formamide T=0 - 20°C;

1: 1-hydroxy-pyrrolidine-2,5-dione With trifluoroacetic anhydride in N,N-dimethyl-formamide T=0°C; 0.166667 h; Inert atmosphere; 2: With 2,4,6-trimethyl-pyridine in N,N-dimethyl-formamide T=0°C; 0.166667 h; Inert atmosphere; 3: N-(carboxyacryloyl)-4-(aminomethyl)-cyclohexane-1-carboxylic acid in N,N-dimethyl-formamide T=0 - 20°C; Inert atmosphere;

1: 1-hydroxy-pyrrolidine-2,5-dione With trifluoroacetic anhydride in N,N-dimethyl-formamide T=0°C; 0.166667 h; Inert atmosphere; 2: With 2,4,6-trimethyl-pyridine in N,N-dimethyl-formamide T=0°C; 0.166667 h; Inert atmosphere; 3: N-(carboxyacryloyl)-4-(aminomethyl)-cyclohexane-1-carboxylic acid in N,N-dimethyl-formamide T=0 - 20°C; Inert atmosphere;