Syntheses are described of 8-hydroxycinnoline (I11; R= H), 8-hydroxyquinazoline (V), 8- hydroxy-1: Gnaphthyridine (X), and 8-hydroxy-1: 7-naphthyridine (XII). The preparation of 8- hydroxy-1: 7-naphthyridine by a modified Skraup reaction from 3-amino-2-hydroxypyridine ...