Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 365 - 391
Опубликована: Ноя. 15, 2024
Язык: Английский
Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 365 - 391
Опубликована: Ноя. 15, 2024
Язык: Английский
ACS Catalysis, Год журнала: 2024, Номер unknown, С. 15221 - 15236
Опубликована: Окт. 2, 2024
Язык: Английский
Процитировано
2Journal of Catalysis, Год журнала: 2024, Номер 440, С. 115846 - 115846
Опубликована: Ноя. 13, 2024
Язык: Английский
Процитировано
2Molecular Catalysis, Год журнала: 2024, Номер 568, С. 114462 - 114462
Опубликована: Авг. 28, 2024
Язык: Английский
Процитировано
1Journal of the American Chemical Society, Год журнала: 2024, Номер 146(46), С. 31391 - 31399
Опубликована: Ноя. 12, 2024
The alkene-carboxylate transposition (ACT) of allyl carboxylates is one the most atom-economic and synthetically reliable transformations in organic chemistry, as are versatile synthetic intermediates. Classic ACT transformations, including [3,3]-sigmatropic rearrangement transition metal-catalyzed allylic rearrangement, typically yield 1,2-alkene/1,3-acyloxy shifted products through a two-electron process. However, position-altered to produce distinct 1,3-alkene/1,2-acyloxy remains elusive. Here, we report first cobalt-hydride-catalyzed carboxylates, enabling access these unprecedented via 1,2-radical migration (RaM) strategy. This transformation demonstrates broad functional group tolerance, suitable for late-stage modification complex molecules, amenable gram-scale synthesis. It also expands reaction profiles both cobalt catalysis. Preliminary experimental computational studies suggest mechanism involving metal-hydride hydrogen atom transfer (MHAT) 1,2-RaM expected serve basis development Co-H-catalyzed generating wide array valuable building blocks synthetic, medicinal, materials chemistry.
Язык: Английский
Процитировано
1Plasma Science and Technology, Год журнала: 2024, Номер 26(7), С. 075510 - 075510
Опубликована: Апрель 1, 2024
Abstract Catalysis of molecular radicals is often performed in interesting experimental configurations. One possible configuration tubular geometry. The are introduced into the tubes on one side, and stable molecules exhausted other side. penetration depth depends numerous parameters, so it not always feasible to calculate it. This article presents systematic measurements oxygen atoms along made from nickel, cobalt, copper. source O was a surfatron-type microwave plasma. initial density depended gas flow 0.7×10 21 m −3 , 2.4×10 4.2×10 at rates 50, 300, 600 sccm, pressures 10, 35, 60 Pa, respectively. temperature remained room throughout experiments. dissociation fraction decreased exponentially length all cases. depths for well-oxidized nickel were 1.2, 1.7, 2.4 cm, For they slightly lower 1.0, 1.3, 1.6 respectively, while copper, 1.1, 1.7 results explained by dynamics heterogeneous surface association. These data useful any attempt estimate loss fragments tubes, which serve as catalysts association various molecules.
Язык: Английский
Процитировано
0Research Square (Research Square), Год журнала: 2024, Номер unknown
Опубликована: Авг. 2, 2024
Язык: Английский
Процитировано
0Research Square (Research Square), Год журнала: 2024, Номер unknown
Опубликована: Авг. 7, 2024
Язык: Английский
Процитировано
0Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 365 - 391
Опубликована: Ноя. 15, 2024
Язык: Английский
Процитировано
0