A DFT study on the reaction mechanism of dimerization of methyl methacrylate catalyzed by N-heterocyclic carbene
Literature Information
Yunxia Li, Yanyan Zhu, Wenjing Zhang, Donghui Wei, Yingying Ran, Qilin Zhao, Mingsheng Tang
Reaction mechanisms of the N-heterocyclic carbene (NHC)-catalyzed dimerization of methyl methacrylate were studied using density functional theory (DFT) at the M05-2X/6-31G(d,p) level of theory. Four possible reaction channels (A, B, C, and D) have been investigated in this work. Particularly, we proposed a novel reaction pathway, where the proton transfers are assisted by a different molecule. The calculated results indicate that the channels B and D are more energetically favourable channels. The obtained results suggest that the E-isomer product is the main product, which is in agreement with the experimental results. Further calculations and analyses of global and local reactivity indices reveal the role of the NHC catalysts in the title reaction. The mechanistic insights gained are valuable for not only rational design of more efficient NHC catalysts but also for understanding the similar reaction mechanism.
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










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