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

in tetrahydrofuran 3 h; Heating;