Hydrochloric Acid → HCID 135406933, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 4-chloro-3,5-dimethyl-1-(2-pyridinyl)-1H-pyrazolo[3,4-b]quinoline (1.65 g, 5.34 mmol), sodium iodide (0.96 g, 6.41 mmol) and conc. hydrochloric acid (1 mL) in dimethylsulfoxide (20 mL) was heated and stirred at 100° C. for 2 hours. The solution was allowed to cool to room temperature, and the residue was poured into water. The solution was made basic by the addition of an aqueous sodium hydroxide solution, and the organic matter was extracted with 10% methanol/chloroform. The extract was washed with saturated brine and water and dried over anhydrous magnesium sulfate, and the solvents were evaporated under reduced pressure. The residue thus obtained was purified by silica gel column chromatography (ethyl acetate:hexane=90:10) to give the title compound (1.13 g, 73% yield).

Provenance & Evidence