N-methyl-2-pyrrolidone → Methyl N-((6-chloro-4-hydroxy-1,1-dimethyl-2-oxo-naphthalene-3-yl)carbonyl)glycinate

Participants

Reaction Conditions

Reaction Steps

A mixture of ethyl 6-chloro-4-hydroxy-1,1-dimethyl-2-oxo-naphthalene-3-carboxylate (0.224 g, 0.761 mmol), glycine methyl ester hydrochloride (0.115 g, 0.914 mmol, 99% Aldrich), 1-methyl-2-pyrrolidinone (1.5 mL), and TEA (0.32 mL, 2.28 mmol) was heated at 80° C. for 4 hours. The resulting mixture was cooled to room temperature and treated with water (10 mL) causing a white solid to precipitate. The product was collected by vacuum filtration and rinsed with water. MS m/e=338.0 (M+H)+.

Provenance & Evidence