A series of novel azo-disperse dyes containing alkylhydrazonopyridinone structures were synthesized. 4-Methyl-2,6-dioxo-1-propyl-1,2,5,6-tetrahydropyridine-3-carbonitrile (8) is synthesized by one-pot synthesis using ethyl cyanoacetate, propylamine, and ethyl acetoacetate. Compound 8 is then coupled with aromatic and heteroaromatic diazonium salts to afford the corresponding aryl- and heteroaryl-4-methyl-2,6-dioxo-1-propyl-1,2,5,6-tetrahydropyridine-3-carbonitriles 12a,b and 13a–c. Structural assignments to the dyes were made using NMR spectroscopic methods. A high temperature dyeing method was employed to apply these dyes to polyester fabrics. Most of the dyed fabrics tested displayed very good light fastness levels and good wash fastness. Finally, the biological activity of the prepared dyes against Gram positive bacteria and Gram negative bacteria were evaluated.
合成了一系列新型的含有烷基
肼草酮
吡啶结构的偶氮
分散染料。4-甲基-2,6-二氧代-1-丙基-1,2,5,6-四氢
吡啶-3-
氰基化合物(8)是通过一锅法利用
氰乙酸乙酯、
丙胺和
乙酰乙酸乙酯合成的。化合物8随后与芳香族和杂芳香族 diazonium 盐偶合,得到相应的芳基和杂芳基-4-甲基-2,6-二氧代-1-丙基-1,2,5,6-四氢
吡啶-3-
氰基化合物12a,b和13a–c。使用NMR光谱方法对这些
染料进行了结构归属。采用高温染色法将这些
染料应用于涤纶织物上。大多数测试染色织物显示出非常好的光牢度和良好的洗涤牢度。最后,评估了所制备
染料对革兰阳性和革兰阴性细菌的
生物活性。