反应详情

温度

25 °C

A mixture of 1-trityl-1H-[1,2,4]triazole-3-carboxylic acid methyl ester (500 mg, 1.35 mmol) in methanol at 25° C. was treated with a 1N aqueous sodium hydroxide solution (4.0 mL). The reaction was stirred at 25° C. for 24 h. At this time, the reaction mixture was poured into water (100 mL) and acidified with a 1N aqueous hydrochloric acid solution. This solution was extracted with ethyl acetate (2×150 mL). The organics were washed with a saturated aqueous sodium chloride solution (1×150 mL), dried over magnesium sulfate, filtered, and concentrated in vacuo to afford 1-trityl-1H-[1,2,4]triazole-3-carboxylic acid (326 mg, 67%) as a white solid: 1H NMR (DMSO-d6, 300 MHz) δ 8.37 (s, 1H), 7.39 (m, 9H), 7.05 (m, 6H), 3.82 (s, 3H).

1. extractionThis solution was extracted with ethyl acetate (2×150 mL)
2. washThe organics were washed with a saturated aqueous sodium chloride solution (1×150 mL)
3. dry with materialdried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo