[Cp2TiCH2CHMe(SiMe3)]+, an Alkyl–Titanium Complex Which (a) Exists in Equilibrium between a β-Agostic and a Lower Energy γ-Agostic Isomer and (b) Undergoes Hydrogen Atom Exchange between α-, β-, and γ-Sites via a Combination of Conventional β-Hydrogen Elimination–Reinsertion and a Nonconventional CH Bond Activation Process Which Involves Proton Tunnelling

2013 ◽  
Vol 135 (46) ◽  
pp. 17514-17527 ◽  
Author(s):  
Alexandre F. Dunlop-Brière ◽  
Michael C. Baird ◽  
Peter H. M. Budzelaar
Keyword(s):  
Hydrogen Atom ◽  
Lower Energy ◽  
Bond Activation ◽  
Activation Process ◽  
Titanium Complex ◽  
Hydrogen Elimination ◽  
Ch Bond Activation

Theoretical Investigation of CH-Bond Activation by photocatalytic excited SO2 and Effects of (C-, N-, S-, Se-) doped TiO2

2021 ◽  
Author(s):  
Luca Gerhards ◽  
Thorsten Klüner
Keyword(s):  
Theoretical Investigation ◽  
Lower Energy ◽  
Bond Activation ◽  
Sulfonic Acids ◽  
Doped Tio2 ◽  
Ch Bond Activation

The photocatalytic sulfoxidation on TiO2 found by Parrino et al. represents a new interesting and lower energy route for the synthesis of sulfonic acids. Sulfonic acids are an important precursor...

Cobalt induced CH bond activation and C8-arylation of caffeine with aryl bromides

2013 ◽  
Vol 30 ◽  
pp. 139-142 ◽  
Author(s):  
Tingting Zheng ◽  
Hongjian Sun ◽  
Faguan Lu ◽  
Klaus Harms ◽  
Xiaoyan Li
Keyword(s):  
Bond Activation ◽  
Aryl Bromides ◽  
Ch Bond Activation

Carbon Dioxide-Driven Palladium-Catalyzed C–H Activation of Amines: A Unified Approach for the Arylation of Aliphatic and Aromatic Primary and Secondary Amines

Synlett ◽  
2019 ◽  
Vol 30 (05) ◽  
pp. 519-524 ◽  
Author(s):  
Michael Young ◽  
Mohit Kapoor ◽  
Pratibha Chand-Thakuri ◽  
Justin Maxwell ◽  
Daniel Liu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Bond Activation ◽  
Secondary Amines ◽  
Activation Process ◽  
Unified Approach ◽  
Benzylic Amines ◽  
Palladium Catalyzed ◽  
Group A ◽  
Directing Group ◽  
Site Selective

Amines are an important class of compounds in organic chemistry and serve as an important motif in various industries, including pharmaceuticals, agrochemicals, and biotechnology. Several methods have been developed for the C–H functionalization of amines using various directing groups, but functionalization of free amines remains a challenge. Here, we discuss our recently developed carbon dioxide driven highly site-selective γ-arylation of alkyl- and benzylic amines via a palladium-catalyzed C–H bond-activation process. By using carbon dioxide as an inexpensive, sustainable, and transient directing group, a wide variety of amines were arylated at either γ-sp3 or sp2 carbon–hydrogen bonds with high selectivity based on substrate and conditions. This newly developed strategy provides straightforward access to important scaffolds in organic and medicinal chemistry without the need for any expensive directing groups.1 Introduction2 C(sp3)–H Arylation of Aliphatic Amines3 C(sp2)–H Arylation of Benzylamines4 Mechanistic Questions5 Future Outlook

scholarly journals CH Bond Activation of Methane by a Transient η2-Cyclopropene/Metallabicyclobutane Complex of Niobium

2015 ◽  
Vol 137 (39) ◽  
pp. 12450-12453 ◽  
Author(s):  
Chen Li ◽  
Chiara Dinoi ◽  
Yannick Coppel ◽  
Michel Etienne
Keyword(s):  
Bond Activation ◽  
Ch Bond Activation

α-CH Bond Activation of Coordinated Et2O via Reaction of PR3(R = Ph, Cy) with the Cationic Complex [C5Me5W(CO)3(OEt2)]+

1996 ◽  
Vol 15 (1) ◽  
pp. 2-4 ◽  
Author(s):  
Chae S. Yi ◽  
Dariusz Wódka ◽  
Arnold L. Rheingold ◽  
Glenn P. A. Yap
Keyword(s):  
Bond Activation ◽  
Cationic Complex ◽  
Ch Bond Activation

Lewis Bases Trigger Intramolecular CH-Bond Activation: (tBu3SiO)2W=NtBu [rlhar2] (tBu3SiO)(κO,κC-tBu2SiOCMe2CH2)HW=NtBu

2013 ◽  
Vol 2013 (22-23) ◽  
pp. 4056-4067 ◽  
Author(s):  
Michael P. Marshak ◽  
Devon C. Rosenfeld ◽  
Wesley D. Morris ◽  
Peter T. Wolczanski ◽  
Emil B. Lobkovsky ◽  
...  
Keyword(s):  
Bond Activation ◽  
Lewis Bases ◽  
Ch Bond Activation

CH Bond Activation of Unsaturated Hydrocarbons by a Niobium Methyl Cyclopropyl Precursor. Cyclopropyl Ring Opening and Alkyne Coupling Reaction

2016 ◽  
Vol 36 (1) ◽  
pp. 53-63 ◽  
Author(s):  
Pascal Oulié ◽  
Chiara Dinoi ◽  
Chen Li ◽  
Alix Sournia-Saquet ◽  
Kane Jacob ◽  
...  
Keyword(s):  
Ring Opening ◽  
Bond Activation ◽  
Coupling Reaction ◽  
Unsaturated Hydrocarbons ◽  
Ch Bond Activation ◽  
Alkyne Coupling
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