Results 21 to 30 of about 211,355 (114)

C–H Activation via Group 8–10 Pincer Complexes: A Mechanistic Approach

Inorganics
C–H bond activation is a crucial synthetic strategy widely utilized in both academic and industrial settings. Due to the strong and kinetically inert nature of the C–H bond, its functionalization typically requires metal-based catalysts.
Juan S. Serrano-García, Andrés Amaya-Flórez, Jordi R.-Galindo, Lucero González-Sebastián, Luis Humberto Delgado-Rangel, David Morales-Morales   +5 more
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The Activating Effect of Strong Acid for Pd-Catalyzed Directed C–H Activation by Concerted Metalation-Deprotonation Mechanism

Molecules, 2021
A computational study on the origin of the activating effect for Pd-catalyzed directed C–H activation by the concerted metalation-deprotonation (CMD) mechanism is conducted.
Heming Jiang, Tian-Yu Sun
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New approaches to organocatalysis based on C–H and C–X bonding for electrophilic substrate activation

Beilstein Journal of Organic Chemistry, 2016
Hydrogen bond donor catalysis represents a rapidly growing subfield of organocatalysis. While traditional hydrogen bond donors containing N–H and O–H moieties have been effectively used for electrophile activation, activation based on other types of non ...
Pavel Nagorny, Zhankui Sun
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DFT mechanistic study of the selective terminal C–H activation of n-pentane with a tungsten allyl nitrosyl complex

Journal of Saudi Chemical Society, 2017
Mechanistic insights into the selective C–H terminal activation of n-pentane with tungsten allyl nitrosyl complex reported by Legzdins were gained by employing density functional theory with B3LYP hybrid functional.
Richmond Lee, Davin Tan, Chaoli Liu, Huaifeng Li, Hao Guo, Jing-Jong Shyue, Kuo-Wei Huang   +6 more
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Reactivity of bromoselenophenes in palladium-catalyzed direct arylations

Beilstein Journal of Organic Chemistry, 2017
The reactivity of 2-bromo- and 2,5-dibromoselenophenes in Pd-catalyzed direct heteroarylation was investigated. From 2-bromoselenophene, only the most reactive heteroarenes could be employed to prepare 2-heteroarylated selenophenes; whereas, 2,5 ...
Aymen Skhiri, Ridha Ben Salem, Jean-François Soulé, Henri Doucet   +3 more
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Efficient synthesis of 1,3-diaryl-4-halo-1H-pyrazoles from 3-arylsydnones and 2-aryl-1,1-dihalo-1-alkenes

Beilstein Journal of Organic Chemistry, 2011
An efficient synthesis of 1,3-diaryl-4-halo-1H-pyrazoles was achieved. The synthesis involves the [3 + 2] dipolar cycloaddition of 3-arylsydnones and 2-aryl-1,1-dihalo-1-alkenes. The process proceeds smoothly in moderate to excellent yields. 1,3-Diaryl-4-
Yiwen Yang, Chunxiang Kuang, Hui Jin, Qing Yang, Zhongkui Zhang   +4 more
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Insights into the Activation Mode of α‐Carbonyl Sulfoxonium Ylides in Rhodium‐Catalyzed C−H Activation: A Theoretical Study

ChemistryOpen, 2022
A computational study has been performed to investigate the mechanism of RhIII‐catalyzed C−H bond activation using sulfoxonium ylides as a carbene precursor. The stepwise and concerted activation modes for sulfoxonium ylides were investigated.
Dianmin Zhang, Xiaofang He, Tao Yang, Dr. Song Liu   +3 more
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Cooperative α-C–H activation enabled quantitative and partial photooxidation of biomass-derived 5-hydroxymethylfurfural

Green Energy & Environment
Photocatalytic activation of C–H bonds is versatile but challenging for undergoing oriented conversion processes. Herein, a spatially site-isolated heterojunction (ZS-Vs/ZIS) of ZnIn2S4 with strong Lewis acidity (ZIS) and ZnS with S-vacancy (ZS-Vs) is ...
Jie Li, Ye Meng, Yu Wen, Yinyin He, Putla Sudarsanam, Song Yang, Hu Li   +6 more
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Effect of zeolites on the alkylation of aromatics with alkanes using a Pd nanoparticle/solid acid cooperative catalytic system

Green Carbon
The direct alkylation of benzene with alkanes is an effective method for alkylbenzene production. Our group previously discovered that a mixture of supported Pd nanoparticles and solid acids effectively promoted the alkylation of benzene with alkanes ...
Satoshi Misaki, Moe Takabatake, Shingo Hasegawa, Yuichi Manaka, Wang-Jae Chun, Ken Motokura   +5 more
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C–H bond activation of benzene and thiophene by photochemically generated rhenocene cation

International Journal of Photoenergy, 1999
A cationic rhenocene-acetonitrile adduct [Cp2Re(NCMe)](BF4)(1) reacted with an excess of benzene, thiophene, 2-methylthiophene, and pyrrole under UV irradiation to afford the C–H bond activation products [Cp2Re(H)R]BF4 (R = phenyl, 2-thienyl, 2-(5 ...
Hiroshi Ogino, Hiromi Tobita, Kouji Endo, Kiyonari Hashidzume   +3 more
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