Results 11 to 20 of about 834,266 (345)

Direct Functionalization of Nitrogen Heterocycles via Rh-Catalyzed C−H Bond Activation [PDF]

Accounts of Chemical Research, 2008
Nitrogen heterocycles are present in many compounds of enormous practical importance, ranging from pharmaceutical agents and biological probes to electroactive materials.
Alberico D., Alonso F., Alvarez E., Bellina F., Bercaw J. E., Bergman R. G., Campeau L.-C., Canac Y., Chang L. L., Chatani N., Chen M. S., Chiong H. A., Cho J. -Y., Christ M. L., Clement N. D., Crabtree R. H., Daugulis O., Daugulis O., Diederich F., Do H.-Q., Dwyer C. L., Dyker G., Esteruelas M. A., Ferreira E. M., Gant T. G., Garcia-Cuadrado D., Graczyk P. P., Gribble M., Herrmann W. A., Hillier A. C., Hlasta D. J., Ishiyama T., Jia C. G., Johnson J. B., Kakiuchi F., Kakiuchi F., Kalyani D., Klingler R. J., Kreher R., Larhed M., Lewis J. C., Lewis J. C., Lewis J. C., Lewis J. C., Michael J. P., Miura M., Moore E. J., Netherton M. R., Peters M. W., Pivsa-Art S., Rech J. C., Ritleng V., Stuart D. R., Tan K. L., Tan K. L., Tan K. L., Tan K. L., Tan K. L., Tunge J. A., van Assema S. G. A., Wiedemann S. H., Wiedemann S. H., Wiedemann S. H., Yanagisawa S., Zharekeev B. K.   +64 more
core   +3 more sources

C-H bond activation in light alkanes: a theoretical perspective.

Chemical Society Reviews, 2021
Alkanes are the major constituents of natural gas and crude oil, the feedstocks for the chemical industry. The efficient and selective activation of C-H bonds can convert abundant and low-cost hydrocarbon feedstocks into value-added products.
Yalan Wang, P. Hu, Jia Yang, Yian Zhu, De Chen   +4 more
semanticscholar   +1 more source

Intermolecular Radical C–H Bond Activation: A Powerful Tool for Late Stage Functionalization

CHIMIA, 2020
The synthesis of complex molecules via radical reactions involving carbon–carbon and carbon–heteroatom bonds has become a very successful approach. Radical chemistry has long been dominated by the use of tin-based reagents.
Fabrice Dénès
doaj   +1 more source

Metal Nanoparticles as Sustainable Tools for C–N Bond Formation via C–H Activation

Molecules, 2021
The design of highly active metal nanoparticles to be employed as efficient heterogeneous catalysts is a key tool for the construction of complex organic molecules and the minimization of their environmental costs.
Federica Valentini, Oriana Piermatti, Luigi Vaccaro   +2 more
doaj   +1 more source

Lead-free B-site bimetallic perovskite photocatalyst for efficient benzylic C–H bond activation

Cell Reports Physical Science, 2021
Summary: Although bismuth (Bi)-based halide perovskites have attracted profound attention in photocatalysis, the undesirable photophysical properties are not well modulated, and the effect of surface structure on adsorption and activation of reactant ...
Ming Shi, Hongpeng Zhou, Wenming Tian, Bin Yang, Songqiu Yang, Keli Han, Rengui Li, Can Li   +7 more
doaj   +1 more source

Strain Release in CH Bond Activation? [PDF]

Angewandte Chemie, 2009
What a relief! In 1955 the principle of strain release was put forward to explain the differing reactivity of axial and equitorial alcohols during oxidation. Our findings suggest that this same rationale may account for the differing rates of activation between axial and equitorial C–H bonds in C–H activation processes.
Ke, Chen, Albert, Eschenmoser, Phil S, Baran   +2 more
openaire   +2 more sources

Computational exploration of the reaction mechanism of the Cu+-catalysed synthesis of indoles from N-aryl enaminones [PDF]

Royal Society Open Science, 2016
We have studied the role of Cu+-phenantroline as a catalyst in the cyclization of N-aryl-enaminones using density-functional theory computations. The catalyst was found to bind the substrate upon deprotonation of its eneaminone, and to dramatically ...
Carlos E. P. Bernardo, Pedro J. Silva
doaj   +1 more source

Ni-catalyzed benzylic β-C(sp3)–H bond activation of formamides

Nature Communications, 2022
The development of 3d-metal-catalyzed β-C–H bond activation via 4-membered metallacycles remains an elusive challenge. Here, the authors report a Ni-Al bimetal-catalyzed β-C(sp3)–H bond activation of formamides via 4-membered nickelacycles.
Rong-Hua Wang, Wei-Wei Xu, Hongli Wu, Yue Li, Jiang-Fei Li, Tao Zhang, Genping Huang, Mengchun Ye   +7 more
doaj   +1 more source

Co(III) Intermediates in Cobalt-Catalyzed, Bidentate Chelation Assisted C(sp²)-H Functionalizations

Inorganics, 2023
The C-H bond activation and functionalization is a powerful tool that provides efficient access to various organic molecules. The cobalt-catalyzed oxidative C-H bond activation and functionalization has earned enormous interest over the past two decades.
Aleksandrs Cizikovs, Liene Grigorjeva
doaj   +1 more source

Ligand Lone-Pair Influence on Hydrocarbon C-H Activation: A Computational Perspective [PDF]

, 2010
Mid to late transition metal complexes that break hydrocarbon C-H bonds by transferring the hydrogen to a heteroatom ligand while forming a metal-alkyl bond offer a promising strategy for C-H activation.
Cundari, Thomas R., Ess, Daniel H., Goddard, William A., III, Gunnoe, T. Brent, Periana, Roy A.   +4 more
core   +2 more sources