Results 91 to 100 of about 5,243 (239)

Copper-Catalyzed Formal C–N Bond Cleavage of Aromatic Methylamines: Assembly of Pyridine Derivatives

, 2016
An efficient copper-catalyzed C–N bond cleavage of aromatic methylamines was developed to construct pyridine derivatives. With neat conditions and facile operation, the fragment-assembling strategy affords a broad range of 2,4,6-trisubstituted pyridines ...
Huawen Huang (1427662), Wanqing Wu (796508), Xiaochen Ji (1771654), Liangbin Huang (1687894), Huanfeng Jiang (1392913)   +4 more
core   +1 more source

Comparison of Three Sympatric Desert Lizards: Digestive Tract Structure, Digestive Enzyme Activities, Gut Microbiota, and Metabolites

Integrative Zoology, EarlyView.
We performed 16S rDNA sequencing and metabolite profiling for three sympatric lizard species—Teratoscincus roborowskii, Phrynocephalus axillaris, and Eremias roborowskii—and compared their goblet cell and enzyme activities in the digestive tract. Our study suggests that the dietary niche may promote divergence or convergence of microbiota across host ...
Yi Yang, Ziyi Wang, Ruichen Wu
wiley   +1 more source

Four Haylages, One Metabonome: Defining Diet Driven Metabolic Shifts in Ponies

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Haylage is widely fed to all categories of stabled horses across Europe and New Zealand. Haylage can vary from high energy nutrient dense forage to low energy highly fibrous fodder, yet little is known about the impact different haylages have on metabolism in horses.
Meriel Moore‐Colyer, Pat Harris, Simon Daniels   +2 more
wiley   +1 more source

α‑Arylation of Saturated Azacycles and N‑Methylamines via Palladium(II)-Catalyzed C(sp³)–H Coupling

, 2015
Pd­(II)-catalyzed α-C­(sp3)–H arylation of pyrrolidines, piperidines, azepanes, and N-methylamines with arylboronic acids has been developed for the first time. This transformation is applicable to wide arrays of pyrrolidines and boronic acids, including
Jillian E. Spangler (1336173), Yoshihisa Kobayashi (723472), Jin-Quan Yu (1303500), Pritha Verma (1525237), Dong-Hui Wang (1525234)   +4 more
core   +1 more source

Quantum Chemical Feasibility Study of Methylamines as Nitrogen Precursors in Chemical Vapor Deposition

, 2015
The possibility of using methylamines instead of ammonia as a nitrogen precursor for the CVD of nitrides is studied using quantum chemical computations of reaction energies: reaction electronic energy (Δ) reaction enthalpy (Δ) and reaction free energy (Δ)
Rönnby, Karl
core   +2 more sources

VUV and mid‐UV photoabsorption cross sections of thin films of glycine and alanine: Application to their photochemistry in the solar system

Photochemistry and Photobiology, EarlyView.
Thin solid films of pure glycine or alanine (thicknesses ranging from 10 to 700 nm) were prepared on MgF2 windows using a vacuum sublimation/recondensation method. VUV‐UV spectroscopy of these films enabled us to characterize new absorption cross sections for glycine and alanine for VUV‐UV radiations between 120 and 300 nm.
Juliette Pastore, Hervé Cottin, Kafila Saïagh, Jodie Belilla, Fabien Stalport, Nicolas Fray, Nathalie Carrasco   +6 more
wiley   +1 more source

PREVENTION AND CONTROL OF DIMETHYLAMINE VAPORS EMISSION: HERBICIDE PRODUCTION PLANT [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2008
The widely used herbicide, dimethylamine salt of 2,4-dichlorophenoxy acetic acid (2,4-D-DMA), is usually prepared by mixing a dimethylamine (DMA) aqueous solution with a solid 2,4-dichlorophenoxy acetic acid (2,4-D). The vapors of the both, reactants and
Zorana Arsenijević, Boško Grbić, Željko Grbavčić, Saša Miletić, Gordan Savčić, Nenad Radić, Radmila Garić-Grulović   +6 more
doaj  

Surface Ligand Engineering in Quantum Dot Photocatalysis: Mechanisms, Design Principles, and Applications

Advanced Chemical Engineering, Volume 1, Issue 2, December 2026.
Surface ligands govern quantum dot photocatalysis through thermodynamic band‐edge tuning, kinetic charge‐transfer regulation, and microenvironmental control. Rational ligand engineering, using short‐chain, inorganic, conjugated, or dual‐ligand systems, enables efficient solar fuel production, selective organic transformations, environmental remediation,
Yali Weng, Huakang Yang, Zining Zhang, Yue Zhou, Dongxiang Luo, Xiao Liu   +5 more
wiley   +1 more source

Palladium-Catalyzed Benzylic C–H Arylation of Azaarylmethylamines

, 2015
A direct C–H functionalization approach to produce aryl­(azaaryl)­methylamines from azaarylmethylamines without directing groups is described. Under conditions where the azaarylmethylamines’ C–H is reversibly deprotonated, a Pd­(OAc)2/NIXANTPHOS-based ...
Jacqueline Jiménez (1470682), Patrick J. Walsh (304213), Byeong-Seon Kim (1470679), Feng Gao (3548)   +3 more
core   +1 more source

Saffron aqueous extract effects on paraquat and glyphosate concentration in common carp (Cyprinus carpio) tissues

Agricultural &Environmental Letters, Volume 11, Issue 2, December 2026.
Reduced bioaccumulation of PQ and GLY by saffron extract in Common carp (Cyprinus carpio) tissues Abstract Herbicides such as paraquat (PQ) and glyphosate (GLY) pose ecological and public health risks because of their persistence, bioaccumulation, and toxicity to aquatic organisms. This study evaluated whether aqueous saffron extract (Crocus sativus L.)
Hossein Hammami, Javad Kharkan
wiley   +1 more source