Triphenylphosphine → N-(4-(3-(4-chlorobenzyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)phenyl)methanesulfonamide

Participants

Reaction Steps

To a round bottom flask was added N-(4-(6-(2-(2-(4-chlorophenyl)acetyl)hydrazinyl)pyridazin-3-yl)phenyl)methanesulfonamide (0.928 mmole), triphenylphosphine (3.25 mmole), azidotrimethylsilane (3.25 mmole), diethyl azodicarboxylate (4.18 mmole), and THF (13 mL). The resulting mixture was stirred at room temperature for 22 hours. The reaction mixture was diluted with dichloromethane and washed with saturated NaHCO3 and brine. The organic extract was dried over Na2SO4 and evaporated in vacuo. The crude product was washed with dichloromethane and methanol. The yellow solid was further purified by recrystallization with DMF and water to yield N-(4-(3-(4-chlorobenzyl)[1,2,4]triazolo[4,3-b]pyridazin-6-yl)phenyl)methanesulfonamide.

Provenance & Evidence