1: ethyl (R)-(+)-2-fluoroacetate; formic acid ethyl ester With sodium hydride in tetrahydrofuran T=0 - 20°C; 72 h; 2: 1-Imino-ethanamine hydrochloride With sodium ethanolate in ethanol Heating / reflux;

1: ethyl (R)-(+)-2-fluoroacetate; formic acid ethyl ester With sodium hydride in tetrahydrofuran T=0 - 20°C; 72 h; 2: 1-Imino-ethanamine hydrochloride With sodium ethanolate in ethanol Heating / reflux; 3: With hydrogenchloride in water pH=6;

N,N-dimethyl-aniline; trichlorophosphate T=110°C; 1.5 h;