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281
Molecular Iodine: A Versatile Catalyst for the Synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione Derivatives in Ethanol
Published 2011-01-01“…An efficient method for the synthesis of 2H-indazolo[2,1-b] phthalazine-1,6,11(13H)-trione derivatives by a three-component condensation reaction of dimedone, aromatic aldehydes and phthalhydrazide in the presence of a catalytic amount of molecular iodine in ethanol is described.…”
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282
Pentafluoropropionic Acid: An Efficient and Metal-Free Catalyst for the One-Pot Synthesis of Tetrahydrobenzo[b]pyran Derivatives
Published 2014-01-01“…Pentafluoropropionic acid (PFPA) efficiently catalyzes the one-pot, three-component reaction of aromatic aldehyde, malononitrile, and dimedone to yield tetrahydrobenzo[b]pyran derivatives in high yields. …”
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283
Removal of pyrene from aqueous solutions by adsorption onto Brazilian peat samples
Published 2016-12-01“…Pyrene is a polycyclic aromatic hydrocarbon, classified as a priority pollutant. …”
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284
Research on Fluorescence Spectroscopy Characteristics of Dissolved Organic Matter of Landfill Leachate in the Rear Part of Three Gorges Reservoir
Published 2015-01-01“…Characteristic frequency area analysis showed that humic acids (HA), and fulvic acids (FA) contain more than hydrophilic organic matter (HyI) aromatic ring structure, and FA aromatic ring structure is the most. …”
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285
Influence of Aggregate and Asphalt Type on the Bond Strength between Asphalt and Aggregates and Its Self-Healing Properties
Published 2022-01-01“…Third, the asphalt was extracted into aromatic, saturated, colloidal, and asphaltene by an asphalt component separation test, and the bond strength between each asphalt component and aggregate was tested. …”
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286
Trifluoroacetic Acid as an Efficient Catalyst for the Room Temperature Synthesis of 2-Aryl-1-arylmethyl-1H-1,3-benzimidazoles in Aqueous Media
Published 2011-01-01“…Trifluoroacetic acid (TFA) is introduced as a commercially available, inexpensive and effective catalyst for the selective and eco-compatible synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles via condensation reaction of o-phenylenediamine derivatives and aromatic aldehydes in ethanol/water at room temperature.…”
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287
CO2-philicity of crude oil constituents: A computational study
Published 2025-06-01“…In all cases, CO2 has the largest affinity towards the aromatic ring. This preference is small (free energy differences of less than 5 kJ mol−1). …”
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288
Theoretical Investigation on the Solubilization in Water of Functionalized Single-Wall Carbon Nanotubes
Published 2012-01-01“…There are three water-dispersible SWCNTs used in this study that were functionalized with (a) formic acid, as a model of carboxylic acid, (b) isophthalic acid, as a model aromatic dicarboxylic acid, and (c) benzenesulfonic acid, as a model aromatic sulfonic acid. …”
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289
Photoredox/Cr-catalyzed enantioselective radical-polar crossover transformation via C-H functionalization
Published 2025-02-01“…The asymmetric radical-polar crossover transformation could build two chiral centers simultaneously and demonstrates broad substrate tolerance, accommodating various drug-derived aldehydes, (hetero)aromatics, and 1,3-diene derivatives. Preliminary mechanistic studies indicate the involvement of a radical intermediate, with the chiral allylic chromium species reacting with various aliphatic and aromatic aldehydes through Zimmerman–Traxler transition states enabled by dual photoredox and chiral chromium catalysis.…”
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290
Optical Energy Transfer Mechanisms: From Naphthalene to Biacetyl in Liquids and from Pyrazine to Biacetyl
Published 2012-01-01“…The sensitization of biacetyl by several aromatic donors has been investigated in detail. An aromatic donor, pyrazine, is raised to its first excited singlet state by absorption of ultraviolet radiation. …”
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291
Zirconyl (IV) Nitrate as Efficient and Reusable Solid Lewis Acid Catalyst for the Synthesis of Benzimidazole Derivatives
Published 2013-01-01“…The present paper introduces a simple and efficient method for the synthesis of substituted benzimidazoles by heterocyclization of different o-phenylenediamines and substituted aromatic carboxylic acid/aldehyde in the presence of zirconyl nitrate as catalyst in ethanol under reflux, which produced excellent yield of corresponding benzimidazoles in a short reaction time with reusability of catalyst.…”
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292
Nucleophilicity Index Based on Atomic Natural Orbitals
Published 2013-01-01“…The results of test calculations considering the regioselectivity problem in electrophilic aromatic substitution to the benzene derivatives are presented and briefly discussed.…”
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293
L as an Efficient Catalyst for Synthesis of Aldimines at Ambient Temperature Condition
Published 2011-01-01“…Some new aldimines were synthesized from substituted 2-amino thiazoles and different aromatic aldehydes using L-proline as an efficient catalyst. …”
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294
Development of Validated Spectrophotometric Methods for Estimation of Ethacridine Lactate in Pharmaceutical Formulations
Published 2011-01-01“…Method A is based on the condensation of the primary aromatic amino group of ethacridine lactate with an aromatic aldehyde (p-Dimethylamino- cinnamaldehyde) to form a chromophore with absorption maximum of 600nm. …”
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295
Light-Emitting Polymer Nanocomposites
Published 2011-01-01“…The selected aromatic ligand systems were characterized using infrared spectroscopy, thermal analysis, rheological measurements, and optical spectroscopy. …”
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296
Spectroscopic Characteristics of Dissolved Organic Matter in Afforestation Forest Soil of Miyun District, Beijing
Published 2016-01-01“…And the characterization of DOM implied that UV humic-like substances were the major fluorophores components in the DOM of the soil samples, which consisted of aliphatic chains and aromatic components with carbonyl, carboxyl, and hydroxyl groups.…”
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297
Distillation of Essential Oils
Published 2011-06-01“…Essential oils are volatile, aromatic oils obtained from plants and used for fragrance, flavoring, and health and beauty applications. …”
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298
One-Pot Synthesis of 1,8-Dioxo-octahydroxanthenes Utilizing Silica-Supported Preyssler Nano Particles as Novel and Efficient Reusable Heterogeneous Acidic Catalyst
Published 2011-01-01“…A highly efficient one-pot synthesis of 1,8-dioxo-octahydroxanthenes from dimedone and various aromatic aldehydes under reflux conditions in water, catalyzed by silica-supported preyssler nano particles (SPNP) is reported. …”
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299
Efficient and Convenient Synthesis of 1,8-Dioxodecahydroacridine Derivatives Using Cu-Doped ZnO Nanocrystalline Powder as a Catalyst under Solvent-Free Conditions
Published 2013-01-01“…A simple and convenient one-step method for synthesis of acridines and their derivatives from condensation of aromatic aldehydes, cyclic diketones, and aryl amines using Cu-doped ZnO nanocrystalline powder as a catalyst is reported. …”
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300
Distillation of Essential Oils
Published 2011-06-01“…Essential oils are volatile, aromatic oils obtained from plants and used for fragrance, flavoring, and health and beauty applications. …”
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