Methanol → 8-Methoxy-2-propyl-5-quinolinecarboxylic acid

Participants

Reaction Steps

A mixture of methyl 8-methoxy-2-n-propylquinoline-5-carboxylate (1.0 g, Reference Example 27), potassium carbonate (0.8 g), methanol (30 ml), and water (2 ml) was refluxed or 5 hours. The solution was concentrated, then diluted with water and then washed with diethyl ether. The pH of the aqueous phase was adjusted to 6 by addition of hydrochloric acid (6M). The resulting cream precipitate was washed with water and then dried at 60° C. to give the title compound (0.43 g) as a cream coloured solid, m.p. 214-217° C.

Provenance & Evidence