4-methyl-morpholine 1) DMF, r.t., 30 min, 2) THF, -10 deg C to r.t.; Yield given. Multistep reaction;

1: With 2-hydroxy-1,3-isoindolinedione; 1,8-diazabicyclo[5.4.0]undec-7-ene in N,N-dimethyl-formamide T=23 - 50°C; 2: With hydrogenchloride in water; N,N-dimethyl-formamide 3: With hydrazine hydrate in ethanol T=23°C; 4 h;

hydrogenchloride Hydrolysis; 2 h; Heating;

hydrogenchloride; potassium hydroxide; hydroxylamine hydrochloride 1.) ethanol, 65 deg C, 90 min, 2.) ether; Multistep reaction;

hydrazine hydrate in ethanol 0.5 h; Ambient temperature; Yield given;