Short-RInChIKey=SA-FUHFF-UHFFFADPSC-WUGJXCOMZV-UHFFFADPSC-NUHFF-NODPP-NUHFF-ZZZ

(E)-3-(3,3-Diisopropyltriaz-1-en-1-yl)-5-methyl-1H-pyrazole (500 mg, 2.39 mmol, 1.00 equiv) was dissolved in DMSO (25.0 mL) and cesium carbonate (934 mg, 2.87 mmol, 1.20 equiv) was added. The reaction mixture was cooled to 0 °C and bromomethylbenzene (817 mg, 568 μL, 4.78 mmol, 2.00 equiv) was slowly added. After the addition, the reaction mixture was slowly warmed to 21 °C and stirred for 16 hours at this temperature. For work up ice-water was added to the reaction mixture. The aqueous phase was extracted three-times with ethyl acetate and the combined organic phase was washed with water and brine, dried over Na2SO4 and filtered.