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

2-(1H-Indol-3-yl)-N-[4-(trifluoromethyl)phenyl]acetamide (150 mg, 471 μmol, 1.00 equiv) was dissolved under inert atmosphere in dry N,N-dimethylformamide (10.0 mL). Sodium hydride (20.7 mg, 518 μmol, 1.10 equiv) and 1-iodobutane (95.4 mg, 59.0 μL, 518 μmol, 1.10 equiv) were added at 0 °C and the reaction mixture was stirred at 21 °C for 18 hours. The reaction was stopped by addition of 5 mL of methanol.