The reaction of sodium salt of 3-carboxyquinaldine and formaldehyde gave 2-hydroxyethyl-3-quinolinecarboxylic, acid lactone, which was led to the amide, and its oxidation gave 1-hydroxy-2, 10-diazaanthracene. 2, 10-Diazaanthracene was obtained from this 1-hydroxy compound. 1, 7-Naphthyridine was synthesized from 4-chloro-1, 7-naphthyridine via 4-hydrazino compound.
