1: n-Tridecanoic acid With oxalyl dichloride in benzene 2: ethanolamine With N,N-dimethyl-formamide in dichloromethane T=20°C;

T=160°C;

in acetonitrile T=20°C; Inert atmosphere;

1: With sodium hydroxide; sodium hypochlorite; 4-acetylamino 2,2,6,6-tetramethylpiperidin-N-oxyl; potassium bromide in water; toluene T=31 - 37°C; pH=6.9; 1.5 h; 2: With sodium hydroxide in water; toluene T=20 - 33°C; pH=8.6; 3.5 h; 3: With hydrogenchloride in tetrahydrofuran; water; toluene pH=2.2; Product distribution / selectivity;