Results 81 to 90 of about 468,328 (285)

Selective formation of aromatic amines by selenium-catalyzed reduction of aromatic nitro compounds with CO/H2O under atmospheric pressure

open access: yes, 2004
An efficient method for the catalytic reduction of aromatic nitro compounds to the corresponding aromatic amines is reported. In the presence of selenium as a catalyst, the aromatic nitro compounds are quantitively reduced by CO/H2O to form the ...
Lu, SW, Liu, XZ
core   +1 more source

Accelerating green heterocyclic synthesis: Convergence of AI, automation, and sustainable chemistry

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Green heterocyclic synthesis and data‐driven tools such as AI, high‐throughput experimentation, continuous flow, and self‐driving laboratories have developed largely in parallel. This review connects them and asks how green metrics such as E‐factor and PMI might serve as explicit optimization targets rather than post‐hoc measures, toward sustainable ...
Noor Aisyah Ahmad Shah   +8 more
wiley   +1 more source

Ultimate Carcinogenic Metabolites from Aromatic and Heterocyclic Aromatic Amines:  A Computational Study in Relation to Their Mutagenic Potency

open access: yes, 2016
The formation of nitrenium ions from their precursors was examined by density functional theory (DFT) calculations in order to analyze the role of these electrophilic intermediates on the mutagenic activity of the parent amines. The relative reactivities
Gabriela L. Borosky (1706416)
core   +1 more source

Multicomponent reactions for DNA‐encoded library construction: Scaffold diversity and reaction engineering strategies

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Abstract DNA‐encoded libraries (DELs) enable large‐scale screening for hit identification, but accessing sp3‐rich, three‐dimensional chemotypes beyond flat, aromatic scaffolds remains challenging. Multicomponent reactions (MCRs) assemble such complexity from simple building blocks in a single step, and reaction‐engineering strategies have extended on ...
Jimin Moon   +3 more
wiley   +1 more source

Effect and Mechanisms of Spice Marination on the Formation of Hazards in Roasted Fish [PDF]

open access: yesShipin Kexue
In this study, the hazards and thermal reaction products were monitored in roasted fish marinated with spices. Correlation analysis and dimensionality reduction analysis were carried out using multivariate statistical analysis methods to explore the ...
CHE Jing, WANG Bo, CUI Shuang, HUANG Xuhui, QIN Lei
doaj   +1 more source

Oxidation of primary aromatic amines to nitro derivatives catalyzed by iron(III) and manganese(III) tetraaryl porphyrins

open access: yes, 1993
The oxidation of primary aromatic amines to the corresponding nitro derivatives has been observed in catalytic systems (turnovers/hour up to 18000) containing tert-butyl hydroperoxide and metallo-tetraaryl porphyrins (metal = FeIII or MnIII) in the ...
S. Tollari   +3 more
core   +1 more source

The presence of polycyclic aromatic hydrocarbons and heterocyclic aromatic amines in barbecued meatballs formulated with different animal fats

open access: yes, 2021
© 2021 Elsevier LtdThe formations of polycyclic aromatic hydrocarbons (PAHs) and heterocyclic aromatic amines (HAAs) in barbecued meatballs formulated with different animal fats [beef intermuscular and/or sheep tail (ST)] were investigated.
ÖZ, Emel
core   +1 more source

Ternary Crosslinking Builds Nanosheet Hard Carbon and Interfacial Polarization Regulates Na⁺ Kinetics in Hard Carbon Anodes

open access: yesCarbon Energy, EarlyView.
Nanosheet Hard Carbon for Fast Na+ Storage ABSTRACT Hard‐carbon anodes for sodium‐ion batteries are often constrained by low initial Coulombic efficiency, severe interfacial polarization, and sluggish Na⁺ kinetics, especially when porosity engineering amplifies electrolyte consumption.
Dongke Cai   +5 more
wiley   +1 more source

Synthesis of 2-Aryl-4-arylazo-2-thiazolin-5-ones and their reaction with aromatic amines

open access: yes, 1976
2-Aryl-4-arylazo-2-thiazolin-5-ones are prepared by a coupling reaction between thioaroylglycine and the appropriate diazonium salt. Their heterocyclic ring is readily opened by the action of primary aromatic amines in acetic acid containing a catalytic ...
AM Khalil, HM Hassan, IIA El-Gawad
core   +1 more source

Engineering Halide Perovskites With Chalcogen‐Based Compounds: Insights Into Stability, Interfaces, and Device Integration

open access: yesCarbon Energy, EarlyView.
Chalcogen‐based compounds are explored as versatile tools to enhance the stability and performance of halide perovskites. Their roles in defect passivation, ion migration suppression, and interface engineering are analyzed, along with impacts on device efficiency.
Atanu Jana   +4 more
wiley   +1 more source

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