in N,N-dimethyl-formamide T=0 - 20°C;

in tetrahydrofuran T=0 - 20°C; 1.5 h;

in methanol T=0°C; 0.0833333 h;

1: 66 percent / phosphoryl chloride, phosphorus pentachloride / 8 h / Heating 2: 75 percent / ammonia / various solvent(s) / 4 h / 140 °C 3: 83 percent / trifluoromethanesulfonic anhydride, dimethylsulfoxide 4: 1.) m-chloroperbenzoic acid; 2.) ozon 5: 81 percent / methanol / 0.08 h / 0 °C View Scheme

1: 75 percent / ammonia / various solvent(s) / 4 h / 140 °C 2: 83 percent / trifluoromethanesulfonic anhydride, dimethylsulfoxide 3: 1.) m-chloroperbenzoic acid; 2.) ozon 4: 81 percent / methanol / 0.08 h / 0 °C View Scheme

1: 83 percent / trifluoromethanesulfonic anhydride, dimethylsulfoxide 2: 1.) m-chloroperbenzoic acid; 2.) ozon 3: 81 percent / methanol / 0.08 h / 0 °C View Scheme

1: ethanol / 6 h / |Reflux 2: trichlorophosphate / |Reflux 3: N-benzyl-N,N,N-triethylammonium chloride / 20 °C View Scheme

N-benzyl-N,N,N-triethylammonium chloride T=20°C;

hydrazine hydrate