Results 91 to 100 of about 49,482 (250)

Hydrodenitrogenation of pyridines and quinolines at a multinuclear titanium hydride framework

Nature Communications, 2017
Investigation of the hydrodenitrogenation (HDN) of aromatic N-heterocycles such as pyridines and quinolines at the molecular level is of fundamental interest and practical importance, as this transformation is essential in the industrial petroleum ...
Shaowei Hu, Gen Luo, T. Shima, Yi Luo, Z. Hou   +4 more
semanticscholar   +1 more source

Metal‐Free Covalent Organic Frameworks for Photocatalytic CO2 Reduction

ChemistryEurope, EarlyView.
This review presents an environmentally sustainable strategy to address the critical issue of escalating atmospheric CO2 levels. It explores the application of metal‐free covalent organic frameworks in a photocatalytic approach, offering a green and efficient strategy for carbon dioxide reduction and contributing to climate change mitigation.
Supriti Dutta, Akhtar Alam, Pekham Chakrabortty, Pradip Pachfule   +3 more
wiley   +1 more source

Synthesis and Photophysical Characterization of Axially Functionalized Silicon(IV) Naphthalocyanines with Phototheranostic Potential

ChemistryEurope, EarlyView.
In this study, the synthesis and detailed photophysical characterization of SiNcs functionalized with structurally diverse axial ligands designed to enhance solubility and evaluate photophysical properties are reported. The lead compound, SiNc 3‐PP, demonstrates photothermal conversion efficiency of 62.1% and pronounced photoacoustic contrast at 810 nm,
Pedro M. R. Santos, Benjamin Proto, Debalina Mondal, Alicia Voge, Christine Hoskin, Hanyi Weng, Inês R. M. Santos, Kevin Stamplecoskie, João P. C. Tomé, Juan Chen, Nahyun Kwon, Gang Zheng   +11 more
wiley   +1 more source

1,7-Hydride transfer-involved dearomatization of quinolines to access C3-spiro hydroquinolines

Green Synthesis and Catalysis
1,7-Hydride transfer-involved dearomatization of quinolines toward C3-spiro hydroquinoline derivatives has been developed. This method offers a protocol to achieve the dearomatization of electron-deficient arenes via the redox-neutral hydride transfer ...
Da-Ying Shao, Bin Qiu, Zi-Kang Wang, Zhen-Yuan Liu, Jian Xiao, Xiao-De An   +5 more
doaj   +1 more source

Investigating the Activity Spectrum for Ring-Substituted 8-Hydroxyquinolines

Molecules, 2010
In this study, a series of fourteen ring-substituted 8-hydroxyquinoline derivatives were prepared. The synthesis procedures are presented. The compounds were analyzed using RP-HPLC to determine lipophilicity.
Aidan Coffey, Jim O'Mahony, Marcela Vejsova, Katarina Kralova, James Carroll, Jacek E. Nycz, Matus Pesko, Josef Jampilek, Robert Musiol, Anna Mrozek, Jaroslaw Polanski   +10 more
doaj   +1 more source

Quantum Chemistry Investigation of Linear and Nonlinear (chir)optical Properties of Oligoamide Foldamers

ChemistryEurope, EarlyView.
The linear and nonlinear (chir)optical properties of four oligoamide foldamers with different donor groups are studied by means of time‐dependent density functional theory calculations. It is shown that stronger donors yield larger hyperpolarizabilities due to low‐lying charge–transfer states. The agreement with the experiments concerning the key bands
Komlanvi Sèvi Kaka, Andrea Bonvicini, Yann Ferrand, Céline Olivier, Vincent Rodriguez, Benoît Champagne   +5 more
wiley   +1 more source

Skeletal Editing from Pyridine to Aniline via C‐Insertion and N‐Isomerization

ChemistryEurope, EarlyView.
A concise protocol is presented that converts pyridines into anilines by externalizing the original pyridine nitrogen at either the "ipso" or "ortho" position, which results in para or meta‐primary aniline products. A key carbene‐insertion step precedes nitrogen migration, preserving both ring size and overall structure.
Yun Luo, Jing Dai, Yongchang Wei, Chang Min   +3 more
wiley   +1 more source

Eco‐Friendly Synthesis of Cobalt Phthalocyanine for High‐Efficiency CO2${\rm CO}_{2}$ Electroreduction

Chemistry – A European Journal, EarlyView.
A sustainable synthesis of cobalt phthalocyanine (CoPc) using low‐impact solvents yields high‐performance electrocatalysts with reduced waste (E‐factor 18.6). When integrated into gas diffusion electrodes, CoPc achieves up to 12% Faradays efficiency for CO2‐to‐methanol and 65% CO2‐to‐CO conversion, aligning with state‐of‐the‐art materials and enabling ...
Gloria Zanotti, Federica Palmeri, Venanzio Raglione, Abdolhamid Khodadadi, Camille Tabaries, Jerome Capitolis, Mathieu Prevot, Laurent Piccolo, Mahmoud Zendehdel, Roberto Flammini, Giorgio Contini   +10 more
wiley   +1 more source

Divergent Synthesis of Functionalized Quinolines from Aniline and Two Distinct Amino Acids.

Journal of Organic Chemistry, 2017
A practicable quinoline synthesis from aniline and two amino acids was developed for generating a wide range of quinolines with high efficiency and diversity.
Jia-Chen Xiang, Zi-Xuan Wang, Yan Cheng, ShiYan Xia, Miao Wang, Bo‐Cheng Tang, Yan‐Dong Wu, A. Wu   +7 more
semanticscholar   +1 more source

Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview

Chemistry – A European Journal, EarlyView.
The graphical abstract summarizes the review “Pd(II)‐Catalyzed Strategies for the β‐Arylation of α‐Amino Acids: An Overview”, highlighting representative Pd(II)‐catalyzed methods for the β‐arylation of α‐amino acids. Key mechanistic features, substrate diversity, and synthetic relevance of these transformations are showcased. Abstract Metal‐catalyzed C─
Davide Illuminati, Claudio Trapella, Vinicio Zanirato, Virginia Cristofori, Anna Fantinati   +4 more
wiley   +1 more source