Beta-Alanine → HCID 68297245, compound

Participants

Reaction Steps

A mixture of 5-hydroxy-1-methyl-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (35 mg, 0.11 mmol), β-alanine (805 mg, 9.0 mmol) and NaOMe solution (13.5 mL, 6.8 mmol, 0.5 M in MeOH) was refluxed for 48 h. After the mixture was cooled to r.t., the solvent was evaporated in vacuo. The residue was partitioned between EtOAc and water. 1 M HCl was added with vigorous stirring until pH was about 1. The organic layer was dried over MgSO4 and concentrated. The residue was dissolved in saturated NaHCO3 and washed several times with ether. The aqueous layer was acidified to pH 2 with 6 M HCl, and the resulting suspension was extracted with CH2Cl2. The organic layer was dried over MgSO4 and concentrated to give 30 mg of the title compound as a light yellow solid. MS: (−) m/z 366.28 (M−1).

Provenance & Evidence