Short-RInChIKey=SA-FUHFF-UHFFFADPSC-LKGAYQXGDX-UHFFFADPSC-NUHFF-NZGMW-NUHFF-ZZZ

N-Propan-2-ylpropan-2-amine (1.29 g, 1.78 mL, 12.7 mmol, 1.10 equiv) was dissolved under nitrogen in dry THF (30.0 mL) and pyridine (3.40 mL) 9:1 at - 20 °C. 1H-Pyrazole-5-diazonium;tetrafluoroborate (2.10 g, 11.5 mmol, 1.00 equiv) was dissolved in acetonitrile (5.00 mL) and this solution was slowly added. The reaction mixture was slowly warmed up to 21 °C and stirred at this temperature for 16 hours.