Efficient Photooxidation of Aryl(hetaryl)pyrazolines by Benzoquinone. (25th February 2019)

• Record Type: Journal Article
• Authors: Traven, Valery F.; Ivanov, Ivan V.; Dolotov, Sergei M.; Semakin, Artem N.; Cheptsov, Dmitriy A.; Mamirgova, Zarina Z.
• Is Part Of: Photochemistry and photobiology. Volume 95:Number 4(2019)
• Page Start: 924
• Page End: 930
• Publication Date: 2019-02-25
• Subjects: Photochemistry -- Periodicals; Light -- Physiological effect -- Periodicals; 541.35
• DOI: 10.1111/php.13082
• Languages: English
• ISSNs: 0031-8655

Abstract

Abstract: Photooxidation of aryl(hetaryl)pyrazolines in the presence of benzoquinone has been studied in organic solvents. This reaction occurs at high rate to provide the corresponding pyrazole in a good yield. The effects of the solvent, pyrazoline structure and oxygen provide definite information on the reaction pathway. It appears that radical species are intermediates in the photooxidation of aryl(hetaryl)pyrazolines in the presence of benzoquinone. A comparison of the new results with the photooxidation of aryl(hetaryl)pyrazolines in the presence of perchloroalkanes is also discussed. Abstract : Photooxidation of aryl(hetaryl)pyrazolines in the presence of benzoquinone in organic solvents undergoes at high rate and provides the corresponding pyrazoles in a good yields. The effects of the solvent, pyrazoline structure and oxygen provide definite information on the reaction pathway.