Water → (5-Ethyl-thiophen-3-yl)-(1,3,3-trimethyl-6-aza-bicyclo[3.2.1]oct-6-yl)-methanone

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Reaction Steps

1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.06 g; 1.2 eq) was added to a solution of 5-ethyl-thiophene-3-carboxylic acid (0.04 g; 1 eq.) in DCM (1 mL/100 mg of starting material). This mixture was stirred at room temperature for 5 minutes, then 1,3,3-trimethyl-6-aza-bicyclo[3.2.1]octane (0.043 g; 1.1 eq.) added and the mixture allowed to stir for 18 hours. Water (1 mL/100 mg of starting material) was then added and the organic layer separated, dried and evaporated to give the crude product which was purified by column chromatography (EtOAc/iso-hexane) to give the title compound (0.046 g). LCMS m/z 292 [M+H]+ RT=4.28 min (Analytical Method 3).

Provenance & Evidence