Potassium Carbonate → HCID 90273376, 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 (500 mg, 1.179 mmol) in dioxane (20 mL) and water (10 mL) were added K2CO3 (488 mg, 3.537 mmol) and 4-tolyl boronic acid (179 mg, 1.297 mmol) in a sealed tube. The reaction mixture was degassed with N2 for 20 min, then Pd(PPh3)4 (136 mg, 0.118 mmol) was added to the reaction mixture at RT, The reaction mixture temperature was raised to 100° C., stirred for 18 h at 100° C. The reaction mixture was diluted with water (30 mL) extracted with ethyl acetate (3×30 mL) and organic layer was washed with brine, dried the organic layer over anhydrous sodium sulphate and concentrated under reduced pressure to affords the crude product. Crude was purified by column chromatography using 100-200 mesh silica gel compound eluted with 35% ethyl acetate in petroleum ether to afford the title compound as a white solid.

Provenance & Evidence