Results 141 to 150 of about 32,974 (279)

Ruthenium‐Catalyzed Nitrile‐Acrylate Reductive Coupling by 2‐Propanol: Synthesis of Enantioenriched β‐Amino Esters

open access: yesAngewandte Chemie, EarlyView.
The first nitrile reductive couplings beyond stoichiometric metals or metalloids are described. Using a ruthenium catalyst derived from RuHCl(CO)(PPh3)3 and Cy‐BIPHEP, 2‐propanol‐mediated reductive coupling of phenyl acrylate with aromatic or aliphatic nitriles delivers α,β‐unsaturated β‐amino esters.
Sebastian Höthker   +3 more
wiley   +2 more sources

Regioselective Deacetylation in Nucleosides and Derivatives

open access: yesChemBioChem
AbstractNucleoside analogues are a promising class of natural compounds in the pharmaceutical industry, and many antiviral, antibacterial and anticancer drugs have been created through structural modification of nucleosides scaffold. Acyl protecting groups, especially the acetyl group, play an important role in the protection of hydroxy groups in ...
Charis Grabbe, Li Cai
openaire   +2 more sources

Inducing regioselectivity in metal-bound aryne reactions and using ligands to govern divergent reaction pathways [PDF]

open access: yes
University of Minnesota Ph.D. dissertation. January 2025. Major: Chemistry. Advisor: Courtney Roberts. 1 computer file (PDF); xxiii, 225 pages.The highly reactive nature of arynes has been leveraged to make many value-added species. Despite this success,
Denman, Brylon
core   +1 more source

Electrochemical Regioselective Chalcogenocyclizations of 2‐Alkynylbenzamides in Flow

open access: yesChemElectroChem
Electrochemical activation plays a key role in boosting substrate reactivity and directing unique cyclization patterns through the nature of intermediates.
Hanaa Gieman   +2 more
doaj   +1 more source

Mechanism and Origin of Regioselectivity in the Phosphine-Catalyzed Heine Reaction

open access: yes
Powered@NLHPC: This research was partially supported by the supercomputing infrastructure of the NLHPC (CCSS210001) and the HPC-OCÉANO (FONDEQUIP N°EQM170214). S. G.-F.
Lodeiro, Lucas   +4 more
core   +1 more source

Control of Aryne Capture Regioselectivity via Fluoroboronate-induced Distortion

open access: yes, 2019
Arynes are valued as extremely versatile electrophilic intermediates. Control over the regioselectivity with which arynes react is typically achieved using comparatively simple and/or chemically inutile substituents close to the reactive triple bond ...
Hribersek, Matic,   +2 more
core  

Transformative Masked Ortho‐Quinone Chemistry: From Direct Guaiacol Activation to Lignin‐Based Adhesives

open access: yesAngewandte Chemie International Edition, EarlyView.
Renewable guaiacols are rapidly oxidized by phenyliodine(III)diacetate to masked ortho‐quinones, giving a new class of monomers that undergo selective Michael‐type polyaddition with multithiols to from thiol‐guaiacol connectivity‐bearing polymers. The activation applies to discrete monomers and directly to lignin, enabling two‐component adhesives that ...
Dominik P. Hoch   +7 more
wiley   +1 more source

An autonomous lab for data-driven homogeneous catalysis. [PDF]

open access: yesNat Commun
Bennett JA   +8 more
europepmc   +1 more source

Quantitative Screening of Ziegler-Natta: Catalyst Regioselectivity

open access: yes, 2015
High Throughput Experimentation (HTE) has gained importance in the screening of olefin polymerization catalysts. In particular, its recent integration with ‘fast’ 13C NMR spectrometers represents a most powerful tool for mechanistic investigations ...
CIPULLO, ROBERTA
core  

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