Results 11 to 20 of about 2,392 (185)

POSITIVE AND NEGATIVE ION MASS SPECTRA OF RING - SUBSTITUTED NITROBENZENES [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1993
The 70 ev positive and negative ion mass spectra of ring-substituted nitrobenzenes were studied. The influence of the substituent group on the fragmentation modes of the molecular ions is discussed.
doaj   +1 more source

Copper modified TiO2 catalysts: application to nitrobenzenes degradation

open access: yesMATEC Web of Conferences, 2016
Copper doped TiO2 by the method of sol-gel preparation was conducted to stimulate the TiO2 visible light response and enhance the performance of photocatalytic degradation.
Chunyu Shui
doaj   +2 more sources

Sustainable Access to N-Heterocycles: One-Pot Cascade Synthesis of Pyrroles From Bio-Derived Furans. [PDF]

open access: yesAngew Chem Int Ed Engl
Highly dispersed platinum (Pt) clusters on Brønsted acid‐rich HY zeolite enable a one‐pot cascade conversion of bio‐derived furans and nitroarenes into pyrroles. Highly dispersed Pt sites ensure selective nitro hydrogenation, while Pt nanoparticles promote undesired over‐hydrogenation.
Qi H   +5 more
europepmc   +3 more sources

Highly Selective Electrocatalytic Reduction of Substituted Nitrobenzenes to Their Aniline Derivatives Using a Polyoxometalate Redox Mediator. [PDF]

open access: yesACS Org Inorg Au, 2023
Anilines and substituted anilines are used on the multi-ton scale for producing polymers, pharmaceuticals, dyes, and other important compounds. Typically, these anilines are produced from their corresponding nitrobenzene precursors by reaction with ...
Stergiou AD, Broadhurst DH, Symes MD.
europepmc   +2 more sources

Studied on chloronitrobenzene manufacture wastewater treatment with sequential anaerobic-aerobic process

open access: yes浙江大学学报. 农业与生命科学版, 2003
The characteristics of start-up process of sequential anaerobic and aerobic bioreactors for treatment of chloronitrobenzene manufacture wastewater were studied in this paper.
XIANG Shuo, YE Min, XU Xiang-yang
doaj   +1 more source

Mild synthesis of symmetric 3,5-disubstituted nitrobenzenes

open access: yes, 2022
A mild synthesis of 3,5-disubstituted nitrobenzenes from readily available 3-formylchromones is reported. The developed methodology follows a cascade process, promoted by 1,8-diazabicyclo[5.4.0]undec-7-ene.
Guieu, Samuel   +4 more
core   +1 more source

Bio-inspired synthesis of palladium nanoparticles fabricated magnetic Fe3O4 nanocomposite over Fritillaria imperialis flower extract as an efficient recyclable catalyst for the reduction of nitroarenes

open access: yesScientific Reports, 2021
This current research is based on a bio-inspired procedure for the synthesis of biomolecule functionalized hybrid magnetic nanocomposite with the Fe3O4 NPs at core and Pd NPs at outer shell. The central idea was the initial modification of magnetic NP by
Hojat Veisi   +7 more
doaj   +1 more source

α-Fluorination of Nitrobenzenes and Nitropyridines via Vicarious Nucleophilic Substitution of Hydrogen [PDF]

open access: yes, 2020
A highly selective C–H functionalization of nitrobenzenes and nitropyridines is reported using tandem vicarious nucleophilic substitution (VNS) chemistry with electrophilic fluorination using Selectfluor®.
Al-mkhaizim, Fayez Y.   +1 more
core   +1 more source

Very rapid synthesis of highly efficient and biocompatible Ag2Se QD phytocatalysts using ultrasonic irradiation for aqueous/sustainable reduction of toxic nitroarenes to anilines with excellent yield/selectivity at room temperature

open access: yesUltrasonics Sonochemistry, 2022
There are many problems associated with the synthesis of nanocatalysts and catalytic reduction of nitroarenes - e.g., high temperatures, costs, long reaction/synthesis process times, the toxicity of chemicals/solvents, undesirable byproducts, the toxic ...
Maryam Shahzad Shirazi   +3 more
doaj   +1 more source

Nucleophilic substitution of nitrite in nitrobenzenes, nitrobiphenyls and nitronaphthalenes [PDF]

open access: yes, 1991
Aromatic compounds, accessible only by multistep procedures, can be synthesized easily by nucleophilic substitution of nitrite in nitrobenzenes, nitrobiphenyls, and nitronaphthalenes.
Streicher, Willi   +2 more
core   +1 more source

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