tert.-butylhydroperoxide; n-butyllithium in tetrahydrofuran; hexane; toluene T=-20°C; 1.5 h;

1: 4-(N,N-dimethylamino)benzoic acid With 1,1'-carbonyldiimidazole in tetrahydrofuran 1 h; RefluxInert atmosphere; 2: aci-anion nitromethane sodium salt in tetrahydrofuran; mineral oil 16 h; RefluxInert atmosphere;

1: nitromethane With sodium hydride in tetrahydrofuran; mineral oil T=20°C; 0.5 h; Inert atmosphere; 2: N-(4-dimethylaminobenzoyl)imidazole in tetrahydrofuran; mineral oil 16 h; Inert atmosphereReflux; 3: With hydrogenchloride in water; ethyl acetate

1.1: tetrahydrofuran / 1 h / Inert atmosphere; Reflux 2.1: sodium hydride / tetrahydrofuran; mineral oil / 0.5 h / 20 °C / Inert atmosphere 2.2: 16 h / Inert atmosphere; Reflux View Scheme

trichlorophosphate 2 h; Heating;