Results 81 to 90 of about 562,929 (255)

Catalytic Alcoholysis of Tetramethylsilane via Pt-Mediated C−H Bond Activation [PDF]

, 2003
Tetramethylsilane reacts with 2,2,2-trifluoroethanol (TFE) in the presence of a cationic platinum(II) catalyst [(NN)PtMe(TFE)]+ (NN = 1,2-bis(3,5-dimethylphenylimino)butane).
Bercaw, John E., Heyduk, Alan F., Labinger, Jay A.   +2 more
core   +1 more source

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source

Zinc-indium-sulfide favors efficient C − H bond activation by concerted proton-coupled electron transfer

Nature Communications
C − H bond activation is a ubiquitous reaction that remains a major challenge in chemistry. Although semiconductor-based photocatalysis is promising, the C − H bond activation mechanism remains elusive.
Xuejiao Wu, Xueting Fan, Shunji Xie, Ivan Scodeller, Xiaojian Wen, Dario Vangestel, Jun Cheng, Bert Sels   +7 more
doaj   +1 more source

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
doaj   +1 more source

Activation and Oxidation of Mesitylene C−H Bonds by (Phebox)Iridium(III) Complexes [PDF]

, 2015
A pincer iridium(III) complex, (Phebox)Ir(OAc)_2OH_2 (1) (Phebox = 3,5-dimethylphenyl-2,6-bis(oxazolinyl)), selectively cleaves the benzylic C–H bond of mesitylene to form an isolable iridium mesityl complex, (Phebox)Ir(mesityl)(OAc) (3), in >90% yield ...
Emge, Thomas J., Gao, Yang, Goddard, William A., III, Goldman, Alan S., Johnson, Samantha I., Nielsen, Robert J., Zhou, Meng   +6 more
core   +5 more sources

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Different Patterns of Pd-Promoted C-H Bond Activation in (Z)-4-Hetarylidene-5(4H)-oxazolones and Consequences in Photophysical Properties

Inorganics
This work aims to amplify the fluorescence of (Z)-4-hetarylidene-5(4H)-oxazolones 1 by suppression of the hula-twist non-radiative deactivation pathway by C^N-orthopalladation of the 4-hetarylidene ring.
Miguel Martínez, David Dalmau, Olga Crespo, Pilar García-Orduña, Fernando Lahoz, Antonio Martín, Esteban P. Urriolabeitia   +6 more
doaj   +1 more source

Advances in the Synthesis of Fluorinated Scaffolds by Transition Metal-Catalyzed C–H Bond Activation

CHIMIA, 2020
Thanks to the unique features of the fluorine atom and the fluorinated groups, fluorine-containing molecules are essential. Therefore, the search for new fluorinated groups as well as straightforward and original methodologies for their installation is ...
Sara Mazet, Maria Ivana Lapuh, Tatiana Besset   +2 more
doaj   +1 more source

Transition state energy decomposition study of acetate-assisted and internal electrophilic substitution C−H bond activation by (acac-O,O)_2Ir(X) complexes (X = CH_3COO, OH) [PDF]

, 2008
Chelate-assisted and internal electrophilic substitution type transition states were studied using a DFT-based energy decomposition method. Interaction energies for benzene and methane C−H bond activation by (acac-O,O)_2Ir(X) complexes (X = CH_3COO and ...
Bischof, Steven M., Ess, Daniel H., Goddard, William A., III, Oxgaard, Jonas, Periana, Roy A.   +4 more
core   +1 more source

Stoichiometric and catalytic C-C and C-H bond formation with B(C6F5)3 via cationic intermediates [PDF]

, 2017
This work showcases a new catalytic cyclization reaction using a highly Lewis acidic borane with concomitant C−H or C−C bond formation. The activation of alkyne‐containing substrates with B(C6F5)3 enabled the first catalytic intramolecular cyclizations ...
Al-Amin, Bézier, Chen, Chernichenko, Cui, Erker, Faizi, Fujihara, Gevorgyan, Guo, He, Jacobsen, Kehr, Kim, Komeyama, Komeyama, Legare, Liedtke, Liu, Mahdi, Maitlis, Mandal, Melen, Mitu, Mochida, Nicasio, Oestreich, Parveen, Piers, Rajeev, Rosenthal, Satoh, Sinha, Stephan, Tamke, Tu, Tussing, Warner, Welch, Wilkins, Wilkins, Wilkins, Yu, Yuan, Zhang, Zhao, Zhao, Zuccaccia   +47 more
core   +2 more sources