| Autor: |
Trivedi, Pranav, Sharma, Chandramauly, Sharma, Kuldeep, Pande, Umeshchandra |
| Předmět: |
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| Zdroj: |
Russian Journal of General Chemistry; Jun2024, Vol. 94 Issue 6, p1475-1486, 12p |
| Abstrakt: |
The photosensitized reaction of isomeric bromoanilines in an alkaline medium under visible light using methylene blue as a photosensitizer was investigated. It was observed that bromoanilines do not form exciplex with methylene blue, and the reaction rate remains consistent in the pH range of 6 to 12. This reaction involves the heterolytic cleavage of the C–Br bond, leading to the formation of anilinium cations and resulting in amino phenols in methanolic solutions or anisidine in other conditions. The position of the halogen atom does not significantly impact the reaction. The study utilized UV-visible spectroscopy for analysis for product characterization. Methanol did not exhibit a free radical scavenging effect on bromoanilines. Additionally, the influence of various parameters such as pH, sensitizer and substrate concentrations, and light intensity on the reaction rate was explored. The quantum efficiency of the photosensitized reaction was calculated, and a reaction mechanism was proposed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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