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Benzylic C-H Hydroxylations in the Presence of Bioinspired Mn Complexes: the Origin of Acetate Products Доклады на конференциях

Язык Английский
Тип доклада Стендовый
Url доклада http://conf.nsc.ru/mcr2019/en/mcr2019_scientific_program
Конференция XI International Conference Mechanisms of Catalytic Reactions
07-11 окт. 2019 , Сочи
Авторы Оттенбахер Роман Викторович 1,2 , Сун Вей 3 , Sun Q. 3 , Брыляков Константин Петрович 1,2
Организации
1 Институт катализа им. Г.К. Борескова СО РАН
2 Новосибирский национальный исследовательский государственный университет
3 Lanzhou Institute of Chemical Physics

Реферат: Herewith, the details of molecular mechanism of manganese catalyzed benzylic C-H oxidation are examined, using the formation of acetate as a mechanistic probe. The correlation between the alcohol/acetate ratio (alcohol selectivity) and the presence of electron-donating groups at the aminopyridine ligand core has been revealed. Isotopic labeling studies witness that the oxygen atom in the cumyl alcohol originates from the H2O2 molecule, while the oxygen of the acetate comes from the acetic acid. These data rule out acid-catalyzed Fischer esterification of the initially formed cumyl alcohol, and provide evidence for a different mechanism of cumyl acetate formation. Possible mechanistic alternatives are discussed.
Библиографическая ссылка: Ottenbacher R.V. , Sun W. , Sun Q. , Bryliakov K.P.
Benzylic C-H Hydroxylations in the Presence of Bioinspired Mn Complexes: the Origin of Acetate Products
XI International Conference Mechanisms of Catalytic Reactions 07-11 Oct 2019