Potassium Carbonate → 1-[4-(4-Ethynyl-1,3-thiazol-2-yl)piperidin-1-yl]-2-[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]ethanone

Participants

Reaction Conditions

Reaction Steps

Under argon, 2-(1-{[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazol-4-carbaldehyde (200 mg) is dissolved in methanol (5 ml) and potassium carbonate (215 mg) and dimethyl 1-diazo-2-oxopropylphosphonate (199 mg) are added. The mixture is stirred at 40° C. After aqueous work-up, the mixture is extracted with ethyl acetate and the extracts are dried with sodium sulphate and concentrated under reduced pressure. The residue is purified chromatographically. This gives 1-[4-(4-ethynyl-1,3-thiazol-2-yl)piperidin-1-yl]-2-[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]ethanone (67 mg).

Provenance & Evidence