Triethylamine → methyl 3-(4-(2-(1-(5-methyl-1,3,4-thiadiazol-2-yl)piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridin-1(2H)-ylsulfonyl)propanoate

Participants

Reaction Steps

To a solution of 2-(1-(5-methyl-1,3,4-thiadiazol-2-yl)piperidin-4-yloxy)-6-(1,2,3,6-tetrahydropyridin-4-yl)benzo[d]thiazole (95 mg, 0.230 mmol) and triethylamine (0.065 mL, 0.459 mmol) in CH2Cl2 (2 mL) at 0° C. was added methyl 3-(chlorosulfonyl)propanoate (64 mg, 0.345 mmol). The reaction mixture was stirred at this temperature for 15 min, then at rt for 2 h. The reaction mixture was quenched with sat. aq. NaHCO3 (2 mL) and extracted with CH2Cl2 (3×5 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 70% EtOAc) to afford methyl 3-(4-(2-(1-(5-methyl-1,3,4-thiadiazol-2-yl)piperidin-4-yloxy)benzo[d]thiazol-6-yl)-5,6-dihydropyridin-1(2H)-ylsulfonyl)propanoate (80 mg, 0.142 mmol, 62% yield) as a yellow solid. LCMS (m/z)=564 (M+H)+.

Provenance & Evidence