Results 31 to 40 of about 6,557,444 (383)
Catalyst controlled remote CH activation of 8-aminoquinolines with NFSI for CN versus CF coupling
Catalysis Communications, 2021 A catalyst-controlled selective functionalization of 8-aminoquinolines with N-fluorobenzenesulfonimide (NFSI) has been developed. The use of GTP-Cu catalysts leads to CN coupling products and whereas the CF coupling reaction is dominant for GPT-Ni ...
Kai Zheng +6 more
doaj +1 more source
A Concise Total Synthesis of (--)-Maoecrystal Z [PDF]
, 2011 The first total synthesis of (--)-maoecrystal Z is described. The key steps of the synthesis include a diastereoselective Ti^(III)-mediated reductive epoxide coupling reaction and a diastereoselective Sm^(II)-mediated reductive cascade cyclization ...
Cha, Jacob Y. +2 more
core +2 more sources
Practical Synthesis of Hydroxychromenes and Evaluation of Their Biological Activity
Molecules, 2011 A simple and efficient seven steps synthesis of brodifacoum and difethialone from phenylacetyl chloride is described. The key synthetic strategies involve Friedel-Crafts acylation, intramolecular ring cyclization and condensation reaction in the presence
Jae-Chul Jung, Seikwan Oh
doaj +1 more source
m-Carborane as a Novel Core for Periphery-Decorated Macromolecules
Molecules, 2020 Closo m-C2B10H12 can perform as a novel core of globular periphery-decorated macromolecules. To do this, a new class of di and tetrabranched m-carborane derivatives has been synthesized by a judicious choice of the synthetic procedure, starting with 9,10-
Ines Bennour +3 more
doaj +1 more source
Evaluation of commercial GaN HEMTs for pulsed power applications [PDF]
, 2009 A non-conformally invariant coupling between the inflaton and the photon in the minimal Lorentz-violating standard model extension is analyzed. For specific forms of the Lorentz-violating background tensor, the strong-coupling and back-reaction problems ...
Fornetti, F, Morris, KA, Beach, MA
core +3 more sources
Synthetic Approaches and Biological Activities of 4-Hydroxycoumarin Derivatives
Molecules, 2009 The main purpose of this review is to summarize recent chemical syntheses and structural modifications of 4-hydroxycoumarin and its derivatives, of interest due to their characteristic conjugated molecular architecture and biological activities.
Oee-Sook Park, Jae-Chul Jung
doaj +1 more source
The Palladium-Catalyzed Ullmann Cross-Coupling Reaction: A Modern Variant on a Time-Honored Process.
Accounts of Chemical Research, 2018 Cross-coupling reactions, especially those that are catalyzed by palladium, have revolutionized the way in which carbon-carbon bonds can be formed. The most commonly deployed variants of such processes are the Suzuki-Miyaura, Mizoroki-Heck, Stille, and ...
F. Khan +3 more
semanticscholar +1 more source
Synthesis of 2-[(3,4,5-Triphenyl)phenyl]acetic Acid and Derivatives
MolbankNew phenylacetic acid derivatives with potentially valuable biological activities and the ability to act as starting materials for various functionalizations have been prepared by a multi-step synthesis.
Monika Mazik, Pierre Seidel
doaj +1 more source
Reactions coupled to palladium [PDF]
Nature Chemistry, 2012 You would be forgiven if you thought the most important element in an organic transformation was carbon. Matthew Hartings argues that, for just over half a century in many of chemistry's most renowned organic reactions, it has actually been palladium.
openaire +2 more sources
Catalytic reaction coupling of propane dehydrogenation with nitrobenzene hydrogenation over Pt/Al2O3
Catalysis Communications, 2022 Reaction coupling between propane dehydrogenation and nitrobenzene hydrogenation over a commercial Pt/Al2O3 catalyst is presented. The effects of coupling, use of the catalyst, and reaction temperature were studied using a fixed-bed reactor. The coupling
Peng Yu +3 more
doaj +1 more source