Results 81 to 90 of about 47,960 (298)

Abordagens em síntese assimétrica Approaches in asymmetric synthesis

open access: yesQuímica Nova, 1998
The approaches in asymmetric synthesis as the chiron approach, chiral auxiliaries, chiral reagents and asymmetric catalysis are described in a simplified way.
Sergio Pinheiro, Vítor F. Ferreira
doaj   +1 more source

Chirally Functionalized Mesoporous Organosilicas for Chiral Separation and Asymmetric Catalysis

open access: yes, 2009
Chiral PMOs (with chiral functionality in the framework) opens up a new avenue for the synthesis of chiral material and may exhibit promising application potentials in the fields of chiral separation and asymmetric catalysis.
杨启华
core  

Tunable chiral metal organic frameworks toward visible light-driven asymmetric catalysis

open access: yes, 2017
A simple and effective strategy is developed to realize visible light-driven heterogeneous asymmetric catalysis. A chiral organic molecule, which only has very weak catalytic activity in asymmetric alpha-alkylation of aldehydes under visible light, is ...
Tang, Zhiyong   +13 more
core   +1 more source

One‐Step Microfluidic Manufactured Fucose‐Decorated Sweetosomes Choose the Time and the Road for Their Intracellular Journey to Cancer Treatment

open access: yesAdvanced Healthcare Materials, EarlyView.
Sweetosomes, a new class of fucose‐decorated liposomes, are developed via a one‐step microfluidic process without surface chemistry. This study elucidates their main caveolae‐mediated entry and distinct endosomal trafficking. These nanostructures demonstrate superior endosomal escape, organelle acidity modulation, and prolonged plasma persistence ...
Mattia Tiboni   +13 more
wiley   +1 more source

Advances in asymmetric organocatalysis over the last 10 years

open access: yesNature Communications, 2020
Organocatalysis has become a major pillar of (asymmetric) catalysis. Here, the authors discuss recent trends in organocatalytic activation modes for challenging stereoselective transformations and the emerging integration with other fields, such as ...
Shao-Hua Xiang, Bin Tan
doaj   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

Asymmetric catalysis in the nanocage of porous materials

open access: yes, 2012
Asymmetric catalysis in the nanocage of porous ...
杨启华, 李灿
core  

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

open access: yesAdvanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi   +4 more
wiley   +1 more source

Supramolecular self-assembled ligands in asymmetric transition metal catalysis

open access: yes, 2012
The design of novel chiral ligands is at the core of asymmetric catalysis. The catalytic characteristics of a transition metal catalyst such as activity, selectivity and stability can be fine-tuned by optimization of the steric and electronic properties ...
van der Vlugt, J.I.   +2 more
core   +1 more source

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