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Cyclic Voltammetry and Thermal Degradation of Novel 3, 4-aminophthalic acid azo dyes as Antibacterial agents

Author(s) Dr Malliarjun H R, Dr Manjunatha K S, Dr Prasanna B M, Dr Vinay Parol
Country India
Abstract A convenient systematic approach for the preparation of biologically potent 3,4-aminophthalic acid azo dyes 5(a-f) for the synthesis of intermediate aminophthalic acid, from starting material such as phthalic anhydride. Phthalic anhydride upon nitration at appropriate experimental conditions yields to 3,4-NPA and these were separated purified and characterized. These NPA’s were reduced to the corresponding APAs in presence of aqueous Na2S9H2O as reducing agent at controlled reaction conditions. Efforts are made to isolate these aminophthalic acids were unsuccessful hence, an in-situ preparation of series of 3-hydroxy-2-naphthoic acid derivatives by dia-zotization coupling to achieve target compounds 5(a-f). The molecular formula, molecular weight, molecular structure, solubility, colour and yield were reported in Table 2. The IR spectra, NMR spectra and Mass spectra of these compounds are given in fig’s 1-6, 7-19, and 20-21 respectively. The newly synthesized azo dye compounds were screened for there in-vitro antimicrobial activity.
Keywords Amino phthalic acid; Azo dyes; Thermal characterization; Antimicrobial agents
Field Chemistry
Published In Volume 16, Issue 1, January-March 2025
Published On 2025-02-11
Cite This Cyclic Voltammetry and Thermal Degradation of Novel 3, 4-aminophthalic acid azo dyes as Antibacterial agents - Dr Malliarjun H R, Dr Manjunatha K S, Dr Prasanna B M, Dr Vinay Parol - IJSAT Volume 16, Issue 1, January-March 2025. DOI 10.71097/IJSAT.v16.i1.1791
DOI https://doi.org/10.71097/IJSAT.v16.i1.1791
Short DOI https://doi.org/g85dmv
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