HCID 68503636, compound → HCID 59463923, compound

Participants

Reaction Steps

To a solution of 2-(2-(2-(tert-butyldiphenylsilyloxy)ethyl)-5-(2,5-difluorophenyl)-2-phenyl-1,3,4-thiadiazol-3(2H)-yl)-5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine (0.070 g, 0.098 mmol) in 2 mL of anhydrous acetonitrile was added HF-TEA (0.160 mL, 0.99 mmol). The solution was stirred at room temperature for 16 hours then slowly quenched with saturated NaHCO3 (20 mL). The mixture was extracted with EtOAc (3×10 mL) and the combined organic phases were washed with brine (10 mL), dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography (0-1% MeOH/DCM) and the residue was dissolved in 2 mL of methanol and treated with 1N HCl/MeOH (2 mL). After stirring for 10 minutes, the solution was concentrated in vacuo. The residue was triturated with diethyl ether, filtered, washed with ether and dried in vacuo to afford the desired product as a yellow powder, 0.023 g, 42%. MS ESI (+) m/z 473 (M+1) detected; 1H NMR (400 MHz, CDCl3) δ 7.59 (m, 1H), 7.44 (d, 2H, J=7.5 Hz), 7.32 (m, 2H), 7.26 (m, 1H), 7.07 (m, 2H), 4.10 (m, 1H), 3.96 (m, 1H), 3.65 (m, 1H), 3.54 (q, 2H, J=30.2, 14.3 Hz), 2.83 (m, 1H), 2.72 (m, 2H), 2.57 (m, 2H), 2.48 (s, 3H) ppm.

Provenance & Evidence