sodium hydroxide; tetrabutylammomium bromide in water; 2-methyl cyclohexane T=110°C; 5.5 h; Heating / reflux; Product distribution / selectivity;

1: [3,2-c]pyrazole With potassium hydroxide; tetrabutylammomium bromide 0.833333 h; Irradiation; 2: iso-butyl iodide 60 h; Product distribution / selectivity;

1: With n-butyllithium in tetrahydrofuran; hexane T=5 - 20°C; 1 h; 2: With boric acid trimethyl ester in tetrahydrofuran; hexane T=-70°C; 0.5 h; 3: With ammonium chloride in tetrahydrofuran; hexane T=-15 - 20°C; 1 h;