Peculiarities in the Radiolysis of β-Diketones

Авторы: Vlasov S.I., Smirnova A.A., Ponomarev A.V., Uchkina D.A., Sholokhova A.Yu, Mitrofanov A.A.
Журнал: High Energy Chemistry
Том: 57
Номер: 3
Год издания: 2023
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 258
Последняя страница: 263
DOI: 10.1134/S0018143923030165
Аннотация: Intramolecular hydrogen bonding has a significant effect on the radiolytic transformations of β-diketones. Using the radiolysis of acetylacetone as an example, it has been shown that a hydrogen bond between the hydroxyl and carbonyl in an enol prevents proton transfer from the primary radical cation to the neighboring molecule. As a result, the radiolytic formation of a keto alcohol (4-hydroxy-2-pentanone) was not observed at room temperature, but it was effective under boiling conditions. The intramolecular hydrogen bond contributed to a significant structural stress in the radical cation, which increased the yield of C–OH bond cleavage and the inhomogeneous formation of acetate (4-oxopent-2-en-2-yl acetate) under normal conditions.
Добавил в систему: Пономарев Александр Владимирович

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