Results 11 to 20 of about 374,817 (289)

Aluminum-Catalyzed Cross Selective C3–N1′ Coupling Reactions of N-Methoxyindoles with Indoles

open access: yesChemistry, 2023
C3–N1′ bond formation of bisindoles has been a great challenge due to the intrinsic reactivity of indoles as both C3 and N1-nucleophilic character.
Keisuke Tokushige   +3 more
doaj   +1 more source

Sub-barrier fusion of drip-line nuclei [PDF]

open access: yes, 2000
We discuss the role of break-up process of a loosely-bound projectile in subbarrier fusion reactions. Coupled-channels calculations are carried out for $^{11}$Be + $^{208}$Pb and $^{4,6}$He + $^{238}$U reactions by discretizing in energy the particle ...
Hagino, K., Vitturi, A.
core   +3 more sources

The role of the N*(1535) resonance and the pi^- p --> KY amplitudes in the OZI forbidden pi N --> phi N reaction [PDF]

open access: yes, 2008
We study the pi N --> phi N reaction close to the phi N threshold within the chiral unitary approach, by combining the pi^- p --> K^+ Sigma^-, pi^- p --> K^0 Sigma^0 and pi^- p --> K^0 Lambda amplitudes with the coupling of the phi to the K components of
A. Baldini   +7 more
core   +3 more sources

Palladium-catalyzed cross coupling reactions of 4-bromo-6H-1,2-oxazines

open access: yesBeilstein Journal of Organic Chemistry, 2009
A number of 4-aryl- and 4-alkynyl-substituted 6H-1,2-oxazines 8 and 9 have been prepared in good yields via cross coupling reactions of halogenated precursors 2, which in turn are easily accessible by bromination of 6H-1,2-oxazines 1. Lewis-acid promoted
Reinhold Zimmer   +5 more
doaj   +1 more source

Heterogeneous Pd catalysts as emulsifiers in Pickering emulsions for integrated multistep synthesis in flow chemistry [PDF]

open access: yes, 2018
Within the “Compartmentalised Smart Factory” approach of the ONE-FLOW project the implementation of different catalysts in “compartments” provided by Pickering emulsions and their application in continuous flow is targeted.
Binks, Bernard P.   +6 more
core   +1 more source

Recent Advances in Noble Metal Nanocatalysts for Suzuki and Heck Cross-Coupling Reactions

open access: yesMolecules, 2010
Since metal nanoparticles have a high surface-to-volume ratio and very active surface atoms, they are very attractive catalysts for a wide variety of organic and inorganic reactions, compared to bulk catalysts.
Radha Narayanan
doaj   +1 more source

Catalysis by gold nanoparticles: carbon-carbon coupling reactions

open access: yesNanotechnology Reviews, 2013
Gold nanoparticles have been demonstrated to be efficient catalysts for a wide range of reactions in the past decades, such as oxidation and hydrogenation.
Li Gao, Jin Rongchao
doaj   +1 more source

THE LATEST ADVANCEMENTS IN THE ACYLATION REACTIONS VIA CROSS-DEHYDROGENATIVE COUPLING AND/OR METAL CATALYSTS

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2017
There are quite many examples in the scientific literature regarding the acylation reactions, especially the metal-catalyzed acylation reactions, metal-free acylation reactions, metal-catalyzed acylation via cross-dehydrogenative coupling (CDC) reactions
Soykan Ağar, Ömer Tahir Günkara
doaj   +1 more source

Prospects and Applications of Palladium Nanoparticles in the Cross‐coupling of (hetero)aryl Halides and Related Analogues

open access: yesChemistryOpen, 2021
Discovering efficient methods for the formation of carbon‐carbon bonds is a central ongoing theme in organic synthesis. Cross‐coupling reactions catalysed by metal nanoparticles are attractive alternatives to the traditional use of metal counterparts due
Jude I. Ayogu, Efeturi A. Onoabedje
doaj   +1 more source

Signature of smooth transition from diabatic to adiabatic states in heavy-ion fusion reactions at deep subbarrier energies [PDF]

open access: yes, 2009
We propose a novel extension of the standard coupled-channels framework for heavy-ion reactions in order to analyze fusion reactions at deep subbarrier incident energies.
Hagino, Kouichi   +2 more
core   +3 more sources

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