Efficient Photooxidation of Aryl(hetaryl)pyrazolines by Benzoquinone

Valery F Traven; Ivan V Ivanov; Sergei M Dolotov; Artem N Semakin; Dmitriy A Cheptsov; Zarina Z Mamirgova

doi:10.1111/php.13082

Efficient Photooxidation of Aryl(hetaryl)pyrazolines by Benzoquinone

Photochem Photobiol. 2019 Jul;95(4):924-930. doi: 10.1111/php.13082. Epub 2019 Feb 25.

Authors

Valery F Traven¹, Ivan V Ivanov¹, Sergei M Dolotov¹, Artem N Semakin¹, Dmitriy A Cheptsov¹, Zarina Z Mamirgova¹

Affiliation

¹ D. Mendeleev University of Chemical Technology of Russia, Moscow, Russia.

PMID: 30613996
DOI: 10.1111/php.13082

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.

Publication types

Research Support, Non-U.S. Gov't