Potassium Carbonate → 6-Bromo-2-(1-(5-methyl-1,3,4-thiadiazol-2-yl)piperidin-4-yloxy)benzo[d]thiazole

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-bromo-2-(piperidin-4-yloxy)benzo[d]thiazole (Compound 1B, 600 mg, 1.916 mmol) and 2-bromo-5-methyl-1,3,4-thiadiazole (480 mg, 2.68 mmol) in DMF (15 mL) was added potassium carbonate (794 mg, 5.75 mmol). The reaction mixture was stirred at 110° C. overnight. The reaction mixture was cooled to rt, diluted with water (20 mL), and extracted with EtOAc (3×10 mL). The combined organic layers were dried (Na2SO4), filtered, and concentrated. The residue was purified by column chromatography (silica gel, hexanes-EtOAc gradient 0 to 100% EtOAc) to afford 6-bromo-2-(1-(5-methyl-1,3,4-thiadiazol-2-yl)piperidin-4-yloxy)benzo[d]thiazole (455 mg, 1.106 mmol, 58% yield) as a yellow solid. 1H NMR (500 MHz, chloroform-d) δ ppm 7.78 (1H, d, J=1.9 Hz), 7.50-7.56 (1H, m), 7.45-7.50 (1H, m), 5.40-5.52 (1H, m), 3.77-3.88 (2H, m), 3.54-3.66 (2H, m), 2.61 (3H, s), 2.19-2.29 (2H, m), 2.07-2.17 (2H, m). LCMS (m/z)=412 (M+H)+.

Provenance & Evidence