Oxidative dehydrogenation is an irreversible process that uses oxygen as an oxidant to remove hydrogen atoms from the neighboring positions of an organic molecule (Fig. 2). The method is both cost effective and environmentally friendly because it uses …

DDQ has found broad utility as a stoichiometric oxidant in the functionalization of activated C–H bonds and the dehydrogenation of saturated C–C, C–O, and C–N bonds. The cost and toxicity of DDQ triggered recent efforts to develop methods that employ catalytic quantities of DDQ in combination with alternative stoichiometric oxidants.

In chemistry, dehydrogenation is a chemical reaction that involves the removal of hydrogen, usually from an organic molecule. It is the reverse of hydrogenation. Dehydrogenation is important, both as a useful reaction and a serious problem.

2022年7月20日 · α α, β β dehydrogenation (oxidation) of an alkane: Mechanism: In many enzymatic reactions in which FADH2 F A D H 2 acts as the reducing agent, the reaction cycle is completed when FAD F A D, rather than being released from the active site, is recycled back to FADH2 F A D H 2 with the concomitant oxidation of NADH N A D H.

2020年9月21日 · The results obtained for the microscopic kinetics mechanisms of dehydrogenation and oxidation of AlH 3, show a clear direction for research regarding modifications of AlH 3 as the theoretical foundation and are beneficial for the wide use of AlH 3 in applications such as solid propellant as an energetic material and as a hydrogen source for ...

Oxidative dehydrogenation (ODH) is an irreversible and exothermic process which can be carried out at lower temperatures without carbon deposition. The presence of CO 2, a mild oxidant, as a substitute for oxygen allows better olefin selectivity [117–119].

2021年3月23日 · Our results revealed that the adsorbed OH is the reactive species during NH 3 dehydrogenation under reaction conditions rather than OH – in bulk water. These findings bring new insights into the fundamental understandings of the AOR process under realistic electrochemical conditions.

2021年2月4日 · Oxidative dehydrogenation of propane to propylene can be achieved using conventional, oxygen-assisted dehydrogenation of propane (O 2 –ODHP) or via the use of soft oxidants, such as CO 2, N 2 O, S-containing compounds, and halogens/halides.

2017年8月15日 · Among the diverse strategies that were developed for the synthesis of nitrogen heterocycles, oxidative dehydrogenation is extremely effective. This review discusses various oxidative dehydrogenation strategies of C–C and C–N bonds to generate nitrogen heteroarenes from their corresponding heterocyclic substrates.

In this route, partially oxidized enols propagate into the gas phase, followed by dehydrogenation (and methylation) to form ketenes and finally yield olefins by decarbonylation. Quantum chemical calculations predict the >BO dangling site to be the source of free radicals in the process.