Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0304-4165(66)90258-3 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enantioselective Synthesis of α-Hydroxy Allyl Ketones via BINAP-CuH-Catalyzed Hydroacylation.
Angew Chem Int Ed Engl
January 2025
Indian Institute of Chemical Technology, Organic Synthesis and Process Chemistry, Uppal Road, 500607, Hyderabad, INDIA.
Catalytic hydrocupration of unsaturated carbon-carbon bonds to generate organometallic nucleophiles has recently become an attractive alternative to conventional stoichiometric reagents in the stereoselective synthesis. Herein, we have developed an efficient and economical method to synthesize enantiopure α-hydroxy allyl ketones via a copper hydride (CuH)-catalyzed hydroacylation of alkoxyallenes, a significant advancement given the scarcity of reports on such scaffolds in the literature. DFT calculations reveal that this reaction proceeds through the nucleophilic attack of a kinetically favourable Z-selective allyl-copper intermediate on acid anhydrides via a six-membered chair-like transition state, stabilized by strongly attractive non-covalent interactions that ultimately leads to high level of enantioselectivities using the simple BINAP ligand.
View Article and Find Full Text PDFIntegrating Humidity-Resistant and Colorimetric COF-on-MOF Sensors with Artificial Intelligence Assisted Data Analysis for Visualization of Volatile Organic Compounds Sensing.
Adv Sci (Weinh)
January 2025
National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, P. R. China.
Direct visualization and monitoring of volatile organic compounds (VOCs) sensing processes via portable colorimetric sensors are highly desired but challenging targets. The key challenge resides in the development of efficient sensing systems with high sensitivity, selectivity, humidity resistance, and profuse color change. Herein, a strategy is reported for the direct visualization of VOCs sensing by mimicking human olfactory function and integrating colorimetric COF-on-MOF sensors with artificial intelligence (AI)-assisted data analysis techniques.
View Article and Find Full Text PDFConstructing Pillar-Layered Covalent Organic Frameworks via Metal-Ligand Coordination for Electrochemical CO Reduction.
Adv Mater
January 2025
Yunnan Key Laboratory for Micro/Nano Materials and Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, P. R. China.
Growing global concerns over energy security and climate change have intensified efforts to develop sustainable strategies for electrochemical CO reduction (eCORR). Covalent Organic Frameworks (COFs) have emerged as promising electrocatalysts for eCORR due to their tunable structures, high surface areas, and abundance of active sites. However, the performance of 2D COFs is often limited by layer stacking, which restricts active site exposure and reduces selectivity.
View Article and Find Full Text PDFOne-dimensional Lieb superlattices: from the discrete to the continuum limit.
Nanoscale
January 2025
Department of Physics, University of Antwerp, Antwerp, Belgium.
The Lieb lattice is one of the simplest lattices that exhibits both linear Dirac-like and flat topological electronic bands. We propose to further tailor its electronic properties through periodic 1D electrostatic superlattices (SLs), which, in the long wavelength limit, were predicted to give rise to novel transport signatures, such as the omnidirectional super-Klein tunnelling (SKT). By numerically modelling the electronic structure at tight-binding level, we uncover the evolution of the Lieb SL band structure from the discrete all the way to the continuum regime and build a comprehensive picture of the Lieb lattice under 1D potentials.
View Article and Find Full Text PDFCRISPR/Cas13a-Programmed Cu NCs and -Scheme T-COF/AgS for Photoelectrochemical Biosensing of circRNA.
ACS Sens
January 2025
College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Circular RNAs (circRNAs), as a class of noncoding RNA molecules with a circular structure exhibit high stability and spatiotemporal-specific expression, making them ideal cancer biomarkers for liquid biopsy. Herein, a new photoelectrochemical (PEC) biosensor for a highly sensitive circRNA assay in the whole blood of lung cancer patients was designed based on CRISPR/Cas13a-programmed Cu nanoclusters (Cu NCs) and a -scheme covalent organic framework/silver sulfide (T-COF/AgS) composite. This -scheme T-COF/AgS composite accelerates electron transfer and produces an excellent initial photocurrent.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!