Synthesis, solvatochromic properties and antimicrobial activities of some novel pyridone-based disperse disazo dyes

Carbon tetrabromide mediated oxidative cyclocondensation of ketones and thioureas: an easy access to 2-aminothiazoles

“…The generality of protocol was evaluated across a wide variety of ketones and it was found that phenylethanones with an electron-donating substituent were more efficient as compared to those with an electron-withdrawing substituent on the phenyl ring ( Table 2, entries 2-6 vs 7-9). Moreover, heterocyclic and aliphatic ketones were also well compatible with the present reaction conditions ( Table 2, entries [11][12][13][14].…”

“…entry 1 vs[12][13][14]. CH 3 CN was found the most suitable solvent among CH 3 CN, THF, DMF, CH 2 Cl 2 and C 2 H 5 OH(Table 1, entry 1 vs 4-7).…”

“…b Isolated yield of the products 3. c All compounds are known and were characterized by comparison of their 1 H NMR,13 C NMR and MS spectra with those reported in the literature 23,24. …”

Synthesis, Characterization and Biological Potency of Butyl‐Pyridone Based Azo Dyes

“…Nowadays, the heterocyclic azo compound has become very popular because of its superior strength, stability, light fastness, wash fastness, and also produces a remarkable bathochromic effect relative to the simple aromatic carbocyclic system . The existence of azo linkages in the heterocyclic architecture claims plenty of pharmacological applications like antimicrobial, antiviral, antioxidant, antituberculosis, anti‐inflammatory, anticancer, protein synthesis, nitrogen fixation, DNA binding, and cleavage studies …”

Novel Bis(2‐cyanoketene‐S,S‐/S,N‐acetals): Versatile Precursors for Novel Bis(aminopyrazole) Derivatives

“…Various substituted pyrazoles have also been used as chelating and extracting reagents for metal ions . Some compounds containing pyrazole rings have been reported to act as solvatochromic probes , semiconductors , liquid crystals , and organic light‐emitting diodes .…”