Synthesis and amination of 5- and 8-amino derivatives of 2-phenylnaphtho[2,3-d]-1,3-thiazole-4,9-dione
摘要:
5- and 8-Amino-2-phenylnaphtho[2,3-d]-1,3-thiazole-4,9-diones were obtained by treatment of 3,5-diamino-2-chloro- and 2,5 -diamino-3-chloro-1,4-naphthoquinones with sodium sulfide followed by condensation with benzaldehyde. Thermal and photochemical butylamination and CoCl2-promoted arylamination of 5-amino-2-phenylnaphthothiazole-4,9-dione in position 8 was carried out.