Name: Mechanistic Studies on Transition Metal-Catalyzed c-h Activation Reactions Using Combined Mass Spectrometry and Theoretical Methods (Springer Theses) (en Inglés)
Price: 506.54 PEN
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Author: Gui-Juan Cheng
ISBN: 9789811351570

portada Mechanistic Studies on Transition Metal-Catalyzed c-h Activation Reactions Using Combined Mass Spectrometry and Theoretical Methods (Springer Theses) (en Inglés)

Formato

Libro Físico

Editorial

Springer

Autor

Gui-Juan Cheng

Año

2018

Idioma

Inglés

N° páginas

144

Encuadernación

Tapa Blanda

ISBN13

9789811351570

Categorías

Química orgánica

Mechanistic Studies on Transition Metal-Catalyzed c-h Activation Reactions Using Combined Mass Spectrometry and Theoretical Methods (Springer Theses) (en Inglés)

Gui-Juan Cheng (Autor) · Springer · Tapa Blanda

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Reseña del libro "Mechanistic Studies on Transition Metal-Catalyzed c-h Activation Reactions Using Combined Mass Spectrometry and Theoretical Methods (Springer Theses) (en Inglés)"

This thesis presents detailed mechanistic studies on a series of important C-H activation reactions using combined computational methods and mass spectrometry experiments. It also provides guidance on the design and improvement of catalysts and ligands. The reactions investigated include: (i) a nitrile-containing template-assisted meta-selective C-H activation, (ii) Pd/mono-N-protected amino acid (MPAA) catalyzed meta-selective C-H activation, (iii) Pd/MPAA catalyzed asymmetric C-H activation reactions, and (iv) Cu-catalyzed sp3 C-H cross-dehydrogenative-coupling reaction. The book reports on a novel dimeric Pd-M (M = Pd or Ag) model for reaction (i), which successfully explains the meta-selectivity observed experimentally. For reaction (ii), with a combined DFT/MS method, the author successfully reveals the roles of MPAA ligands and a new C-H activation mechanism, which accounts for the improved reactivity and high meta-selectivity and opens new avenues for ligand design. She subsequently applies ion-mobility mass spectrometry to capture and separate the [Pd(MPAA)(substrate)] complex at different stages for the first time, providing support for the internal-base model for reaction (iii). Employing DFT studies, she then establishes a chirality relay model that can be widely applied to MPAA-assisted asymmetric C-H activation reactions. Lastly, for reaction (iv) the author conducts detailed computational studies on several plausible pathways for Cu/O2 and Cu/TBHP systems and finds a reliable method for calculating the single electron transfer (SET) process on the basis of benchmark studies.