1: With sodium methylate in tetrahydrofuran; methanol T=20°C; 2 h; Heating / reflux; 2: With hydrogenchloride in tetrahydrofuran; methanol; water T=20°C;

1: With sodium hydride in DMF (N,N-dimethyl-formamide) T=0 - 100°C; 2.93333 h; Heating / reflux; 2: With hydrogenchloride in DMF (N,N-dimethyl-formamide); water T=20°C;