Propargyl alcohol → 3-(3-(4-chloro-1-methyl-5-phenyl-1H-pyrazolo[3,4-c]pyridazin-3-yl)phenyl)prop-2-yn-1-ol

Participants

Reaction Conditions

Reaction Steps

A mixture of 4-chloro-3-(3-iodophenyl)-1-methyl-5-phenyl-1H-pyrazolo[3,4-c]pyridazine (Compound 7, Example 32) (80 mg, 0.18 mmol), propargyl alcohol (41 mg, 0.74 mmol), triethylamine (87 μl, 0.63 mmol), Cut (3.5 mg, 0.018 mmol), triphenylphosphine (5 mg, 0.018 mmol) and Pd(PPh3)4 (20 mg, 0.018 mmol) in 1,4-dioxane (1.5 mL) was heated at 100° C. for 4 h in a sealed tube. The reaction mixture was partitioned between CH2Cl2 and water. The organic phase was separated and dried using a phase separating cartridge then concentrated in vacuo. The crude residue was purified by column chromatography (silica gel, 20-30% ethyl acetate/isohexane), yielding Compound 30 as a solid (26 mg).

Provenance & Evidence