potassium hydroxide in methanol; water T=0 - 20°C; 18 h;

1: With potassium hydroxide; water in methanol T=0 - 20°C; 18 h; 2: With hydrogenchloride in methanol; water pH=5.5;

1: With 2-methylpropane-2-thiol; sodium nitrite in ethanol; dichloromethane; water; acetic acid; dimethyl sulfoxide T=0 - 20°C; 2: With potassium tert-butylate in dimethyl sulfoxide T=20°C; 2 h; 3: With hydrogenchloride in dimethyl sulfoxide

hydrogenchloride 12 h; Heating;

1: With chloroformic acid ethyl ester; triethylamine in dichloromethane T=-20°C; 2: With ammonia in dichloromethane T=-20°C; 0.166667 h; Further stages.;