Cesium carbonate → [5-(4-Methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-yl]-[4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-amine

Participants

Reaction Conditions

Reaction Steps

To an oven dried tube was added palladium acetate (16.0 mg, 0.0000713 mol), 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene (41.0 mg, 0.0713 mmol), 1,4-dioxane (5 mL), 1-[2-(4-bromo-phenoxy)-ethyl]-pyrrolidine (87 μL, 0.412 mmol), 5-(4-methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (100.0 mg, 0.346 mmol), and cesium carbonate (240 mg, 0.73 mmol) were added all-at-once. The reaction mixture was evacuated with high vacuum and repressurized with nitrogen three times. The tube was sealed and heated at 80° C. for 24 hours. The mixture was cooled to room temperature, filtered through a plug of diatomaceous earth, rinsed with dichloromethane and evaporated. The material was purified via chromatography utilizing an ISCO automated purification apparatus using a silica gel column (40 g) with 0%→20% methanol in dichloromethane solvent gradient. [5-(4-Methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-yl]-[4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-amine was isolated as an orange gummy solid (0.011 g, 7%). 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 9.47 (s, 1H), 8.32 (d, J=8.5 Hz, 2H), 8.13 (d, J=8.5 Hz, 2H), 7.67 (m, 2H), 7.59 (d, J=9.6 Hz, 2H), 7.28 (d, J=6.4 Hz, 1H). 6.91 (d, J=8.5 Hz, 2H), 4.10 (br s, 2H), 3.34 (s, 3H), 2.54 (s, 2H), 1.78 (br s, 2H), 1.24 (br s, 2H). MS=478 (MH)+.

Provenance & Evidence