Triethylamine → 2-N-Methyl-2-N-phenyl-6-{5-[6-(pyrrolidin-1-ylmethyl)pyridin-3-yl]-1,2,4-oxadiazol-3-yl}-1,3,5-triazine-2,4-diamine

Participants

Reaction Steps

To a solution of [5-(3-{4-amino-6-[methyl(phenyl)amino]-1,3,5-triazin-2-yl}-1,2,4-oxadiazol-5-yl)pyridin-2-yl]methanol (Intermediate 125, 50 mg, 132 μmol) in DCM (10 mL) was added methanesulfonyl chloride (11 μL, 139 μmol) and triethylamine (20 μL, 145 μmol). The reaction mixture was stirred for 90 min at room temperature under an inert atmosphere and then evaporated to dryness. The resulting solid was dissolved in DCM (10 mL), pyrrolidine (24 μL, 333 μmol) and triethylamine (46 μL, 333 μmol) and stirred for a further 3 h at room temperature. Incomplete reaction was observed so the reaction was heated at 35 C for a further 16 h. The reaction mixture was then washed with water (3×25 mL) and combined organics were dried over magnesium sulfate and evaporated to dryness. The resulting crude product was purified by silica chromatography (5% MeOH in DCM) to afford the title compound as a beige solid (25 mg, 45%).

Provenance & Evidence