Potassium Carbonate → HCID 90273165, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-[5-(2-amino-5-bromo-pyridin-3-yl)-[1,3,4]oxadiazol-2-yl]-piperidine-1-carboxylic acid tert-butyl ester (1.0 g, 2.35 mmol) in dioxane (20 mL) and water (20 mL) were added K2CO3 (0.95 g, 7.05 mmol), 3-methoxyphenyl boronic acid (0.39 g, 2.59 mmol) in a sealed tube. The reaction mixture was degassed with argon for 20 min, then Pd(PPh3)4 (0.13 g, 0.11 mmol) was added to the reaction mixture. The reaction mixture was stirred for 18 h at 100° C. The reaction mixture was diluted with water (100 mL) extracted with ethyl acetate (2×150 mL) and organic layer was washed with brine, dried over anhydrous sodium sulphate and concentrated under reduced pressure to get crude product. The crude compound was purified by column chromatography using 100-200 mesh silica gel and compound was eluted with 40% ethyl acetate in petroleum ether to afford 500 mg, which was further purified by washing with diethyl ether and hexane to afford the title compound as a pale yellow solid.

Provenance & Evidence