(1-Methyl-1H-[1,2,4]triazol-3-yl)-methanol

Synthesis

153.1 g (0.443 mol, 1.0 eq) of N-formyl-2-trityloxyacetamide was added to a 1L three-necked flask with a mechanical stirrer and a thermometer.30.6 g (0.664 mol, 1.5 eq) of methyl hydrazine and 800 mL of chloroform, stirring was started, 1.5 g (8.9 mmol, 0.02 eq) of p-toluenesulfonic acid was added, and the mixture was stirred at room temperature for 4 h. The remaining material in the HPLC control was less than 1 per cent.225mL2mol/L hydrochloric acid, stirring at room temperature for 2 hours, saturated sodium carbonate solution to adjust the pH value of 6-7, layering, the aqueous layer extracted with chloroform(100mL×2), the organic layer was combined with the solvent under reduced pressure to obtain a crude product. The crude product was recrystallized from ethanol/water (1:2), suction-filtered and dried.Colorless needle crystals (1-methyl-1H-[1,2,4]triazol-3-yl)-methanol 43.0 g, yield 85percent, purity 97.0percent (HPLC),Mp 73-75°C.