Triphenylphosphine → 2-[4-Chloro-5-(3-fluorophenyl)-3-phenyl-pyrazolo[3,4-c]pyridazin-1-yl]-1-pyrrolidin-1-yl-ethanone

Participants

Reaction Steps

A mixture of 4-chloro-5-(3-fluorophenyl)-3-phenyl-1H-pyrazolo[3,4-c]pyridazine (0.33 mmol), 2-hydroxy-1-(pyrrolidin-1-yl)ethanone (0.65 mmol), diethyl azodicarboxylate (114 mg, 0.65 mmol) and triphenyl phosphine (171 mg, 0.65 mmol) in 1,4-dioxane (2 mL) was heated using microwave irradiation to a temperature between 85 and 120° C. for a 30 to 90 min period. The reaction mixture was concentrated in vacuo and the residue was purified by preparative HPLC to provide Compound 11.

Provenance & Evidence