Results 31 to 40 of about 105,811 (251)

Cobalt-catalysed site-selective intra- and intermolecular dehydrogenative amination of unactivated sp3 carbons [PDF]

, 2015
Cobalt-catalysed sp2 C–H bond functionalization has attracted considerable attention in recent years because of the low cost of cobalt complexes and interesting modes of action in the process. In comparison, much less efforts have been devoted to the sp3
Ge, Haibo, Li, Guigen, Sun, Hao, Wu, Xuesong, Yang, Ke, Zhao, Yan   +5 more
core   +1 more source

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

, 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   +2 more sources

Site-Selective Functionalization of (sp3 )C-H Bonds Catalyzed by Artificial Metalloenzymes Containing an Iridium-Porphyrin Cofactor. [PDF]

, 2019
The selective functionalization of one C-H bond over others in nearly identical steric and electronic environments can facilitate the construction of complex molecules.
Clark, Douglas S, Gu, Yang, Hartwig, John F, Liu, Zhennan, Natoli, Sean N   +4 more
core   +3 more sources

'Diastereoselective Carbocyclization of 1,6-Heptadienes Triggered by Rhodium-Catalyzed Activation of an Olefinic C-H Bond' [PDF]

, 2014
The use of α,ω‐dienes as functionalization reagents for olefinic carbon–hydrogen bonds has been rarely studied. Reported herein is the rhodium(I)‐catalyzed rearrangement of prochiral 1,6‐heptadienes into [2,2,1]‐cycloheptane derivatives with concomitant ...
Ackermann, Arockiam, Aïssa, Besset, Bray, Bray, Chen, Colby, Colby, Fagnou, Fairlamb, Fujii, Fujii, Fujii, Goj, Grigg, Hayashi, Hilt, Hilt, Hilt, Hiroi, Jun, Kakiuchi, Kakiuchi, Kisanga, Kuhl, Lim, Lim, Lim, Lloyd-Jones, Lyons, Michaut, Mochida, Moreau, Nečas, Ogoshi, Oguma, Okamoto, Pei, Rajanbabu, Rajanbabu, Sato, Shibata, Shibata, Simon, Song, Sun, Trost, Tsai, Tsujita, Ura, Wang, Xu, Yamaguchi, Yamamoto, Yamamoto, Yamamoto, Yamamoto, Yeung   +58 more
core   +1 more source

Recent Advances in the Nickel-Catalyzed Alkylation of C-H Bonds

Molecules
Functionalization of C-H bonds has emerged as a powerful strategy for converting inert, nonfunctional C-H bonds into their reactive counterparts.
Franc Požgan, Uroš Grošelj, Jurij Svete, Bogdan Štefane, Hamad H. Al Mamari   +4 more
doaj   +1 more source

Triorganoindium reagents in Rh-catalyzed C–H activation/C–C cross-coupling reactions of 2-arylpyridines [PDF]

, 2018
[Abstract] The activation of C–H bonds through catalytic reactions using transition metals is an important challenge in organic chemistry in which the intermediates are related to those produced in the classical cross-coupling reactions.
Pérez Sestelo, José, Riveiros, Ricardo, Sarandeses, Luis A., Tato, Rubén   +3 more
core   +2 more sources

Selective Dealkenylative Functionalization of Styrenes via C-C Bond Cleavage

Research, 2020
As a readily available feedstock, styrene with about 25 million tons of global annual production serves as an important building block and organic synthon for the synthesis of fine chemicals, polystyrene plastics, and elastomers.
Jianzhong Liu, Jun Pan, Xiao Luo, Xu Qiu, Cheng Zhang, Ning Jiao   +5 more
doaj   +1 more source

Catalytic C−H Bond Functionalization with Palladium(II): Aerobic Oxidative Annulations of Indoles [PDF]

, 2003
A palladium-catalyzed aerobic oxidative annulation of indoles is described. We have demonstrated that a variety of factors influence these cyclizations, and in particular the electronic nature of the pyridine ligand is crucial. It is also remarkable that
Ferreira, Eric M., Stoltz, Brian M.
core   +2 more sources

Synthesis of Symmetrical and Unsymmetrical 1,3-Diheteroarylbenzenes Through Palladium-Catalyzed Direct Arylation of Benzene-1,3-disulfonyl Dichloride and 3-Bromobenzenesulfonyl Chlorides [PDF]

, 2015
International audienceThe palladium-catalyzed synthesis of unsymmetrical 1,3-diheteroarylbenzenes was investigated. The first synthetic pathway relies on the desymmetrization of benzene-1,3-disulfonyl dichloride through two successive palladium-catalyzed
Derridj, Fazia, Djebbar, Safia, Doucet, Henri, Idris, Imane, Soulé, Jean-François   +4 more
core   +2 more sources

Recent Developments in Transition-Metal Catalyzed Direct C–H Alkenylation, Alkylation, and Alkynylation of Azoles

Molecules, 2020
The transition metal-catalyzed C–H bond functionalization of azoles has emerged as one of the most important strategies to decorate these biologically important scaffolds. Despite significant progress in the C–H functionalization of various heteroarenes,
Su Chen, Prabhat Ranjan, Leonid G. Voskressensky, Erik V. Van der Eycken, Upendra K. Sharma   +4 more
doaj   +1 more source