反应详情

温度

60 °C

To a solution of ethyl 2-phenyl-2H-tetrazole-5-carboxylate (0.84 g, 3.9 mmol, 1 eq) in 7.6 mL of EtOH/H2O (1.5:1) was added NaOH (0.31 g, 7.8 mmol, 2 eq). The reaction mixture was heated at 60° C. for 30 min and was then quenched with 0.65 mL of conc. HCl. The contents were filtered and washed with MeOH and the filtrate was dried with Na2SO4 and concentrated in vacuo. Purification by silica gel flash chromatography (100% EtoAc) afforded 2-phenyl-2H-tetrazole-5-carboxylic acid (0.41 g, 2.2 mmol, 55%).

1. customwas then quenched with 0.65 mL of conc. HCl
2. filtrationThe contents were filtered
3. washwashed with MeOH
4. dry with materialthe filtrate was dried with Na2SO4
5. concentrationconcentrated in vacuo
6. customPurification by silica gel flash chromatography (100% EtoAc)