Triethylamine → HCID 53831436, compound

Participants

Reaction Steps

A solution of 4-trifluoromethylsulfonyloxy-6-methyl-1-ethoxycarbonylmethyl-2-pyridinone from step 2 above (2.0 g, 5.4 mmol), phenylacetylene (1.1 g, 11 mmol), triethylamine (3.6 mL, 25 mmol), and PdCl2(PPh3)2 (0.42 g, 0.6 mmol) in DMF (20 mL) was heated to 90° C. under inert atmosphere for 1 h. The solvent was removed in vacuo and the residue was partitioned between EtOAc and aqueous NaHCO3. The organic phase was separated, dried over MgSO4, filtered, and concentrated in vacuo. The residue was purified by flash column chromatography using 1:1 EtOAc:hexanes as eluant to give the title compound as an amorphous solid (1.5 g; TLC Rf=0.35, 1:1 EtOAc:hexanes; HPLC RT=8.64 min, method A).

Provenance & Evidence