Synthesis and application of ethyl 2-arylazo-4,9-dioxonaphtho[2,3-<i>b</i>]thiophene-3-carboxylate
作者:D. W. Rangnekar、V. R. Kanetkar、G. S. Shankarling、J. V. Malanker
DOI:10.1002/jhet.5570360103
日期:1999.1
Synthesis of ethyl 2-arylazo-4,9-dioxonaphtho[2,3-b]thiophene-3-carboxylate was achieved by diazotization of ethyl 2-amino-4,9-dioxonaphtho[2,3-b]thiophene-3-carboxylate and coupling with selected N,N-dialkylanilines. The key intermediate ethyl 2-amino-4,9-dioxonaphtho[2,3-b]thiophene-3-carboxylate was synthesized by the condensation of sodium salt of ethyl cyanoacetate with 2,3-dichloro-1,4-naphthoquinone
2-芳基偶氮-4,9-二dioxonaphtho [2,3的合成b ]噻吩-3-羧酸乙酯用2-氨基-4,9-二dioxonaphtho [2,3-的重氮化实现b ]噻吩-3-羧酸盐并与选定的N,N-二烷基苯胺偶联。关键中间体2-氨基-4,9-二氧杂萘并[2,3- b ]噻吩-3-羧酸乙酯是通过氰基乙酸乙酯的钠盐与2,3-二氯-1,4-萘醌的缩合反应合成的。将2-芳基偶氮-4,9-二氧杂萘并[2,3- b ]噻吩-3-羧酸乙酯作为分散染料应用于聚酯纤维上,研究了它们的染色性能。