Hydrochloric Acid → 6-Oxo-5-(2-propen-1-yl)-5,6-dihydro-1,5-naphthyridine-3-carboxylic Acid

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Reaction Steps

To a solution of methyl 6-oxo-5-(2-propen-1-yl)-5,6-dihydro-1,5-naphthyridine-3-carboxylate (0.809 g, 3.32 mmol) in 1,4-dioxane (10 ml) and water (5 ml) was added 2M NaOH (2 ml) and the reaction was stirred at rt for 2 h. The pH of the mixture was then adjusted to 2-3 with 2M HCl and extracted three times with EtOAc. The combined organic phases were then dried and evaporated to give the desired product as a solid (0.689 g, 90%).

Provenance & Evidence