Rf. Fandy, Synthesis of heterocyclic quinones containing bridgehead nitrogen atom from 2-aminonaphtho[2,3-d]thiazole-4,9-dione, ARCH PH RES, 23(5), 2000, pp. 446-449
Imidazonaphthothiazole derivatives 3 similar to6 were prepared by treatment
of 2-aminonaphtho[2,3-d]-thiazole-4,9-dione(1) with phenacyl bromide, chlo
roacetic acid, diethyl oxalate and 2,3-dichloroquinoxaline respectively. Th
e reaction of 1 with ethyl acrylate, ethyl acetoacetate and diethyl malonat
e gave the corresponding naphthothiazolopyrimidine derivatives 8 similar to
11.