Malononitrile-Substituted Indole Compounds as Highly Effective Catalysts in the Catalytic Electrooxidation of Hydrazine
ChemistrySelect, vol.10, no.29, 2025 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 10 Issue: 29
- Publication Date: 2025
- Doi Number: 10.1002/slct.202502984
- Journal Name: ChemistrySelect
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier
- Keywords: Catalysis, Electrochemistry, Electrooxidation, Fuel cells, Indole compounds
- Eskisehir Osmangazi University Affiliated: Yes
Abstract
Novel malononitrile-substituted indole compounds, namely, 2-((5-(2-(2,5-dimethylphenyl)-1-methyl-1H-indol-3-yl)thiophene-2-yl)methylene)malononitrile (10), 2-((5-(2-(2,5-dimethyl phenyl)-1-methyl-1H-indol-3-yl)furan-2-yl)methylene)malononitrile (11), and 2-(4-(2-(2,5-dimethylphenyl)-1-methyl-1H-indol-3-yl)benzylidene)malononitrile (12) were synthesized by using Suzuki–Miyaura coupling, Knoevenagel condensation, electrophilic cyclization, and Sonogashira coupling reactions. The yields were obtained in 94%, 93%, and 97%, respectively. Electrochemical measurements, including cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS), were performed to investigate the electrocatalytic behavior of compounds 10, 11, and 12. The specific activity of compound 12 for hydrazine electrooxidation was determined as 3.941 mA/cm2 with long-term stability.