文献类型：期刊文献

英文题名：Diversity-oriented synthesis of azo disperse dyes with improved fastness properties via employing Ugi four-component reaction

作者：Li, Huanhuan[1];Qian, Hong-Fei[1];Feng, Gaofeng[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China

年份：2019

卷号：165

起止页码：415

外文期刊名：DYES AND PIGMENTS

收录：SCI-EXPANDED(收录号：WOS:000463979700054)、、EI(收录号：20191006592876)、Scopus(收录号：2-s2.0-85062349063)、WOS

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (21376149 and 21676166).

语种：英文

外文关键词：Diversity-oriented synthesis; Azo disperse dye; Ugi four-component reaction; Fastness properties

外文摘要：A novel approach has been established for accessing structurally diverse azo disperse dyes with improved fastness properties by employing an Ugi four-component reaction (Ugi-4CR). The process includes three steps: (1) Ugi-4CR of aniline, cyclohexyl isocyanide, formic acid, and an aromatic aldehyde; (2) selective hydrolysis of amide functionality in the Ugi product; and (3) coupling the hydrolysis product with an aryl diazonium salt. Employing Ugi-4CR herein had advantages over easily controlling the molecular weight/size of the dye. Six new azo disperse dyes were synthesized and their structures were fully characterized by H-1 NMR, C-13 NMR, MS, and FT-IR. It was found that the washing and sublimation fastness properties of the obtained azo disperse dyes on both poly (ethylene terephthalate) (PET) and nylon fibers were remarkably improved as compared with conventional C.I. Disperse Orange 3. The improved fastness properties should be attributed to the moderately increased molecular weight/size and the amide functionality introduced in Ugi-4CR.