1,3-dimethyl-1H-pyrazol-4-amine → 6-[(1,3-Dimethylpyrazol-4-yl)amino]-4-[(2-methyl-1-oxo-3,4-dihydroisoquinolin-8-yl)amino]pyridine-3-carbonitrile

Participants

Reaction Conditions

Reaction Steps

6-chloro-4-(2-methyl-1-oxo-1,2,3,4-tetrahydroisoquinolin-8-ylamino)nicotinonitrile (595 mg, 1.90 mmol), Palladium(II) acetate (34.2 mg, 0.15 mmol), 9,9-Dimethyl-4,5-bis(diphenylphosphino)xanthene (132 mg, 0.23 mmol), 1,3-dimethyl-1H-pyrazol-4-amine (423 mg, 3.80 mmol) and Cesium carbonate (744 mg, 2.28 mmol) were suspended in dioxane (40 mL). The reaction was purged for 5 mins with nitrogen and then heated to 90 °C for 2 hour with stirring. The reaction was cooled to RT. The crude product was purified by ion exchange chromatography, using an SCX column. The desired crude product was eluted from the column using 7M NH3/MeOH and fractions were evaporated to dryness to afford crude product .The crude product was purified by preparative basic HPLC. Fractions containing the desired compound were evaporated to dryness to afford 6-(1,3-dimethyl-1H-pyrazol-4-ylamino)-4-(2-methyl-1-oxo-1,2,3,4-tetrahydroisoquinolin-8-ylamino)nicotinonitrile (54.0 mg, 7.33 %) as a beige solid.

Provenance & Evidence