Results 21 to 30 of about 39,473 (242)

Asymmetric three-component olefin dicarbofunctionalization enabled by photoredox and copper dual catalysis

open access: yesNature Communications, 2021
Vicinal dicarbofunctionalization (DCF) reactions of alkenes have been extensively explored in ionic chemistry but the enantioselective radical mediated version of DCF remains largely unexplored.
Peng-Zi Wang   +5 more
doaj   +1 more source

Desymmetrization of 1,4‐Cyclohexadienyltriisopropoxysilane Using Copper Catalysis. [PDF]

open access: yesChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Rui, Umeda, Armido, Studer
openaire   +2 more sources

Asymmetric cyanoesterification of vinylarenes by electrochemical copper catalysis. [PDF]

open access: yesNat Commun
The heterodifunctionalization of alkenes is an efficient and straightforward method for the preparation of highly functionalized molecules. However, enantioselective introduction of two different carbon-based functional groups in a single step using readily accessible and inexpensive starting materials presents a significant challenge.
Zhou K, Fu N.
europepmc   +3 more sources

Electrocatalytic C(sp3)–H/C(sp)–H cross-coupling in continuous flow through TEMPO/copper relay catalysis

open access: yesBeilstein Journal of Organic Chemistry, 2021
Electrocatalytic dehydrogenative C(sp3)–H/C(sp)–H cross-coupling of tetrahydroisoquinolines with terminal alkynes has been achieved in a continuous-flow microreactor through 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO)/copper relay catalysis.
Bin Guo, Hai-Chao Xu
doaj   +1 more source

Copper(I)-catalyzed asymmetric alkylation of α-imino-esters

open access: yesNature Communications, 2023
Asymmetric alkylation of enolates is one of the most direct and important reactions to prepare α-chiral carbonyl compounds. Except for the classical methods that rely on the use of chiral auxiliaries, asymmetric catalysis emerged as a powerful tool ...
Zong-Ci Liu   +3 more
doaj   +1 more source

Copper's Contribution to Amination Catalysis [PDF]

open access: yesScience, 2013
Copper complexes catalyze a remarkably broad range of organic reactions that form carbon-nitrogen bonds.
openaire   +2 more sources

Structural transformation and catalytic hydrogenation activity of amidinate-protected copper hydride clusters

open access: yesNature Communications, 2022
Copper hydrides have been studied for their exciting structural chemistry and applications in hydrogenation catalysis. Here, the authors uncover the role of the amidinate ligand in yielding two closely related copper hydride clusters with quite different
Chun-Yu Liu   +5 more
doaj   +1 more source

Recent advances in copper-catalyzed C–H bond amidation

open access: yesBeilstein Journal of Organic Chemistry, 2015
Copper catalysis has been known as a powerful tool for its ubiquitous application in organic synthesis. One of the fundamental utilities of copper catalysis is in the C–N bond formation by using carbon sources and nitrogen functional groups such as ...
Jie-Ping Wan, Yanfeng Jing
doaj   +1 more source

Trifluoromethylation of Allylsilanes under Copper Catalysis

open access: yesChemistry – A European Journal, 2012
The trifluoromethylation reactions are performed with Togni reagent (II) to give branched allylic trifluoromethylated products.
Mizuta, S   +6 more
openaire   +3 more sources

Identification of a tyrosine switch in copper-haem nitrite reductases

open access: yesIUCrJ, 2018
There are few cases where tyrosine has been shown to be involved in catalysis or the control of catalysis despite its ability to carry out chemistry at much higher potentials (1 V versus NHE). Here, it is shown that a tyrosine that blocks the hydrophobic
Jianshu Dong   +4 more
doaj   +1 more source

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