Short-RInChIKey=SA-FUHFF-UHFFFADPSC-HEQYPJIVZW-UHFFFADPSC-NUHFF-NVVLV-NUHFF-ZZZ

In a vial, the pyrtriazene resin LSH-1209 (302 mg, 302 mL, 254 μmol, 1.00 equiv) was swollen in 6 mL of DMSO. Then, caesium carbonate (413 mg, 1.27 mmol, 5.00 equiv) and 4-fluorobenzonitrile (123 mg, 1.01 mmol, 4.00 equiv) were added. The vial was closed and shaken at 120 °C for 2 days. The supernatant was filtered off and the resin was washed as follows: 3x acetone, 3x water, 3x acetone, 3x THF, 3x MeOH, 3x DCM, 3x MeOH. It was then dried in vacuo to yield 318 mg of an orange resin LSH-1210 (254 μmol, 0.500 mmol/g and 63% yield for loading from mass difference, 0.797 mmol/g for quantitative conversion and 100% yield).