Disazo dyes containing pyrazole and benzothiazole moieties: synthesis, characterization, absorption characteristics and tautomeric structures
RESEARCH ON CHEMICAL INTERMEDIATES, cilt.43, sa.12, ss.6803-6816, 2017 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 43 Sayı: 12
- Basım Tarihi: 2017
- Doi Numarası: 10.1007/s11164-017-3021-5
- Dergi Adı: RESEARCH ON CHEMICAL INTERMEDIATES
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.6803-6816
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
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.