Disazo dyes containing pyrazole and benzothiazole moieties: synthesis, characterization, absorption characteristics and tautomeric structures

被引：4
作者：
Cicen, Gulsah [1 ]
Atay, Cigdem Karabacak [2 ]
Tilki, Tahir [1 ]
机构：
[1] Suleyman Demirel Univ, Fac Sci & Arts, Chem Dept, TR-32260 Isparta, Turkey
[2] Mehmet Akif Ersoy Univ, Educ Fac, Basic Educ Dept, TR-15030 Burdur, Turkey
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2017年 / 43卷 / 12期
关键词：
Disazo dye; Benzothiazole; Pyrazole; Absorption property; Tautomerization; AZO DYES; DERIVATIVES; DESIGN; AGENTS;
D O I：
10.1007/s11164-017-3021-5
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Eight newly synthesized disazo disperse dyes containing benzothiazole and pyrazole moieties were prepared by diazotization of 2-aminobenzothiazole, coupling with 3-aminocrotononitrile as active methylene, cyclization reactions with hydrazine hydrate and phenyl hydrazine, diazotization again and finally coupling with dimedone, dioxane, 1-methyl imidazole and 2-methyl imidazole, respectively. Their structures were characterized with spectroscopic methods (FT-IR, H-1-NMR, C-13-NMR) and solvatochromic properties were studied with UV-Vis spectroscopy in different solvents. Tautomeric structures of synthesized dyes were also examined in detail.
引用
收藏
页码：6803 / 6816
页数：14
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