Short-RInChIKey=SA-FUHFF-UHFFFADPSC-NMQYIKIIUJ-UHFFFADPSC-NUHFF-NUHFF-NUHFF-ZZZ

(E)-3-(3,3-diisopropyltriaz-1-en-1-yl)-1-(4-methylbenzyl)-1H-pyrazole-4-carbonitrile (101 mg, 310 μmol, 1.00 equiv) was dissolved in methylene chloride (7.0 mL). The solution was cooled to 0 °C and then azido(trimethyl)silane (268 mg, 309 μL, 2.33 mmol, 7.50 equiv) and 2,2,2-trifluoroacetic acid (354 mg, 237 μL, 3.10 mmol, 10.00 equiv) were added. The reaction mixture was slowly warmed to 50 °C while constantly being stirred. The reaction progress was monitored via TLC. After full conversion (16 h), the solvent was reduced under vacuum.