The Role of Catalyst Formation-Deactivation Processes and Evidence for a Nonlinear Mechanism in the Mizoroki-Heck Reaction with Aryl Chlorides Научная публикация
| Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Вых. Данные | Год: 2022, Том: 63, Номер: 5, Страницы: 543-554 Страниц : 12 DOI: 10.1134/S0023158422050068 | ||
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Реферат:
An operando kinetic study was made of the Mizoroki–Heck reaction with low-reactive aryl chlorides using the most practically attractive “ligand-free” catalytic systems. The study included the analysis of the rate of formation and concentrations of the reaction products with simultaneous monitoring of the amount of the palladium acid complex [PdBr4]2– formed in the catalytic system. The results obtained showed the decisive effect of the catalyst transformations outside the catalytic cycle on the main catalytic reaction. The concentration dynamics of the spectroscopically observed complex [PdBr4]2– is inconsistent with the commonly accepted linear scheme of the Mizoroki–Heck catalytic cycle, in which the coupled aryl halide and alkene are sequentially activated in the same catalytic cycle. At the same time, the results of the simulation of the kinetic dependences using models based on the hypothesis of the so-called cooperative catalysis, which assumes the activation of two coupled substrates by catalytically active Pd species in two coupled catalytic cycles, qualitatively fit the experimental data. The results presented suggested that the cooperative catalysis in the Mizoroki–Heck reaction should be taken into account when analyzing experimental results and constructing hypotheses of the reaction mechanism.
Библиографическая ссылка:
Kurokhtina A.A.
, Larina E.V.
, Lagoda N.A.
, Schmidt A.F.
The Role of Catalyst Formation-Deactivation Processes and Evidence for a Nonlinear Mechanism in the Mizoroki-Heck Reaction with Aryl Chlorides
Kinetics and Catalysis. 2022. V.63. N5. P.543-554. DOI: 10.1134/S0023158422050068 WOS Scopus РИНЦ CAPlus OpenAlex
The Role of Catalyst Formation-Deactivation Processes and Evidence for a Nonlinear Mechanism in the Mizoroki-Heck Reaction with Aryl Chlorides
Kinetics and Catalysis. 2022. V.63. N5. P.543-554. DOI: 10.1134/S0023158422050068 WOS Scopus РИНЦ CAPlus OpenAlex
Оригинальная версия:
Курохтина А.А.
, Ларина Е.В.
, Лагода Н.А.
, Шмидт А.Ф.
Роль процессов формирования–дезактивации катализатора и свидетельства нелинейного механизма в реакции Мицороки–Хека с арилхлоридами
Кинетика и катализ. 2022. Т.63. №5. С.614-627. DOI: 10.31857/S0453881122050070 РИНЦ OpenAlex
Роль процессов формирования–дезактивации катализатора и свидетельства нелинейного механизма в реакции Мицороки–Хека с арилхлоридами
Кинетика и катализ. 2022. Т.63. №5. С.614-627. DOI: 10.31857/S0453881122050070 РИНЦ OpenAlex
Даты:
| Поступила в редакцию: | 14 февр. 2022 г. |
| Принята к публикации: | 25 апр. 2022 г. |
| Опубликована online: | 23 сент. 2022 г. |
| Опубликована в печати: | 1 окт. 2022 г. |
Идентификаторы БД:
| Web of science: | WOS:000856975300010 |
| Scopus: | 2-s2.0-85138637664 |
| РИНЦ: | 51546113 |
| Chemical Abstracts: | 2022:2471908 |
| OpenAlex: | W4297012350 |