Hydrochloric Acid → HCID 68297209, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-bromo-1-(2-ethyl-butyl)-5-hydroxy-2-oxo-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (500 mg, 1.3 mmol), PhSnBu3 (0.51 mL, 1.6 mmol), and PdCl2(PPh3)2 (183 mg, 0.26 mmol) in DMF (25 mL) was heated at 120° C. under nitrogen atmosphere for 3 h. After the mixture was cooled to r.t., brine and EtOAc were added. 1 M HCl was added until pH was about 3. The aqueous layer was extracted with additional EtOAc and the organic layers were combined, washed with water and brine, and dried over MgSO4. After evaporating the solvent in vacuo, the crude product was chromatographed (3-35% EtOAc/hexanes+1% AcOH) to give 280 mg of the title compound as a yellow solid. MS: (+) m/z 381.34 (M+1).

Provenance & Evidence