Potassium Carbonate → 2-[2-(2-Fluoro-ethoxy)-phenyl]-[1,2,4]triazolo[1,5-a]pyridin-7-ylamine

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Reaction Steps

To a solution of 2-(7-amino-[1,2,4]triazolo[1,5-a]pyridin-2-yl)-phenol (250 mg, 1.10 mmol) in dry DMF (6 ml), K2CO3 (611 mg, 4.42 mmol) was added under positive nitrogen pressure and the mixture was stirred for 20 min at rt in a sealed tube. A solution of 1-fluoro-2-bromoethane (93 mg, 0.66 mmol) in DMF was added dropwise and the reaction mixture was heated for 8 h at 90° C. On completion of reaction (monitored by TLC), the mixture was cooled, diluted with water and extracted with DCM. The organic layer was dried over Na2SO4 and concentrated under reduced pressure to get the crude product. Purification by silica gel column chromatography using 2% MeOH in DCM as eluent afforded the desired product (200 mg, 66%) as off-white solid. LC-MS: m/z=273.2 [M+H]+.

Provenance & Evidence