1) THF, -5 deg C, 30 min and 2 h, r.t., 2) DMF, 3 h, r.t.; Yield given. Multistep reaction;

hydrogenchloride in methanol T=50°C; Hydrolysis; 4 h;

phosphoric acid in various solvent(s) T=25°C; Hydrolysis; pH=2.80; KineticsActivation energy; Further Variations:pH-valuesSolventsTemperaturesReagents;