Hydrochloric Acid → HCID 135981223, compound

Participants

Reaction Steps

Under an argon atmosphere, to a solution of 6-(6-methoxy-2-phenyl-1H-indol-3-ylmethyl)pyridine-2-carboxamidoxime (46.9 mg) in tetrahydrofuran (0.63 mL) were added 1,1′-carbonyldiimidazole (24.5 mg) and 1,8-diazabicyclo[5,4,0]-7-undecene (0.019 mL), and this mixture was stirred at room temperature for 3 hours. 1,1′-Carbonyldiimidazole (16.3 mg) was added thereto, followed by stirring for 80 minutes. Then, 1,8-diazabicyclo[5,4,0]-7-undecene (0.019 mL) was added thereto, followed by stirring for additional 1 hour. To the reaction mixture was added 1 mol/L hydrochloric acid, followed by extraction with ethyl acetate. The organic layer was washed with 1 mol/L hydrochloric acid, a saturated aqueous sodium hydrogen carbonate solution, and saturated brine successively, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluting solvent: methanol-dichloromethane) to obtain the title compound (43.2 mg).

Provenance & Evidence