Diethyl Ether → HCID 68328241, compound

Participants

Reaction Steps

To a stirred and cooled (0° C.) solution of ethyl 3-(4-fluorophenyl)isothiazole-5-carboxylate (38.50 g, 153.2 mmol) in THF (400 mL) was added a solution of methylmagnesium bromide in diethyl ether (3.0 M, 128 mL, 384 mmol), dropwise over 20 minutes. After another 1.5 hours at 0° C. the reaction was quenched by the slow addition of ethyl acetate (20 mL) and concentrated. The residue was taken up in aqueous NH4Cl (400 mL) and extracted with ethyl acetate (2×150 mL). The combined extracts were dried (Na2SO4) and concentrated. The resulting amber syrup was purified by flash chromatography using a hexane/ethyl acetate gradient to afford 2-(3-(4-fluorophenyl)isothiazol-5-yl)propan-2-ol as soft, golden solid (29.02 g, 80%).

Provenance & Evidence