2-Bromothiazole → HCID 67258522, compound

Participants

Reaction Conditions

Reaction Steps

A flask was charged with 2-bromothiazole (1.386 ml, 15.55 mmol) and THF (30.6 ml) and then sealed and purged with Argon. The solution was cooled to −20° C. and isopropylmagnesium chloride (2 M, 8.16 ml, 16.32 mmol) was added drop wise. The reaction was stirred for 1 hour and then warmed to 0° C. After stirring for 60 minutes, the solution was cooled to −78° C. and methyl 4-acetylbenzoate (3.05 g, 17.10 mmol) in THF (5.11 ml) was added drop wise. The reaction stirred for an additional 30 minutes at −78° C. then warmed to room temperature. After stirring for 1 hour, the reaction was quenched with aqueous saturated NH4Cl and extracted with ethyl acetate (2×). The combined organics were dried over Na2SO4, filtered and concentrated. The crude mixture was purified by flash chromatography on silica (10-75% ethyl acetate/hexanes). The mixed fractions were combined, concentrated and re-purified by column chromatography on silica (10-75% ethyl acetate/hexanes). The desired fractions were combined and concentrated to afford methyl 4-[1-hydroxy-1-(1,3-thiazol-5-yl)ethyl]benzoate (2.54 g, 9.65 mmol, 62.0% yield). MS ESI: [M+H]+ m/z 264.0.

Provenance & Evidence