1: cyanomethylphosphonic acid ethyl ester With potassium tert-butylate in tetrahydrofuran T=0 - 20°C; 2: pentanal in tetrahydrofuran T=20°C; 3: With water in tetrahydrofuran

1: cyanomethylphosphonic acid ethyl ester With potassium tert-butylate in tetrahydrofuran T=0°C; 0.333333 h; 2: 2,2,6,6-tetramethyl-piperidinyl-4-one in tetrahydrofuran T=-78°C;

1: cyanomethylphosphonic acid ethyl ester With potassium tert-butylate in tetrahydrofuran T=0 - 20°C; 2: hexanal in tetrahydrofuran T=20°C; 3: With water in tetrahydrofuran