Short-RInChIKey=SA-FUHFF-UHFFFADPSC-RPLOTKMXWP-UHFFFADPSC-NUHFF-MUHFF-NUHFF-ZZZ

Triphenylphosphane (337 mg, 1.28 mmol, 5.00 equiv) was dissolved in dry methylene chloride (5.0 mL) at 0 °C under N2 atmosphere.Then 2-(bromomethyl)-3-methyl-6,7-diphenylquinoxaline (110 mg, 283 μmol, 1.00 equiv) dissolved in dry methylene chloride (5.0 mL) was added drop-wise at 0 °C and the mixture was stirred for 12 h. The solvent was removed under reduced pressure.