Short-RInChIKey=SA-FUHFF-UHFFFADPSC-NFQAOFXQAV-UHFFFADPSC-NUHFF-NGHTP-NUHFF-ZZZ

To a solution of (E)-(5-(3,3-diisopropyltriaz-1-en-1-yl)-1-isobutyl-1H-pyrazol-4-yl)methanamine (117 mg, 418 μmol, 1.00 equiv) in 4.45 mL of THF, acetic anhydride (85.3 mg, 79.0 μL, 836 μmol, 2.00 equiv) was added at 21 °C. The mixture was stirred at 21 °C. After 14 hours, 2 mL of a 2M NaOH-solution were added and the organic solvent was removed under reduced pressure. The remaining aqueous layer was extracted with methylene chloride (3 x 10 mL). The combined organic layers were washed with a saturated NaHCO3-solution and brine. It was dried over MgSO4 and the solvent was removed under reduced pressure.