Results 21 to 30 of about 1,561 (166)

Photosensitized Oxidation of Isoeugenol in Protic and Aprotic Solvents.

Chemical and Pharmaceutical Bulletin, 1991
化學系 ; 理學院 ...
Chen, Y. L., Wang, L. M., Kuo, Yueh-Hsiung   +2 more
openaire   +2 more sources

Directional Second Sphere Effect on CO2 Activation and Reduction by Iron Porphyrin in Aprotic and Protic Media

Angewandte Chemie, EarlyView.
Directional control within the secondary coordination sphere redefines CO2 reduction by iron porphyrins. Simply rearranging identical urea hydrogen‐bond donors modulates reactivity, revealing that optimal catalysis does not only arise from maximal intermediate stabilization, but also from directional, adaptive non‐covalent interactions that balance ...
Ashutosh Vishwakarma, Sami Essid, Sarah Bouery, Régis Guillot, Bernard Boitrel, Philipp Gotico, Marie Sircoglou, Zakaria Halime   +7 more
wiley   +2 more sources

Influence of Swelling Media on the Crystallinity and Accessibility of Lyocell Fibers: An FTIR and 13C NMR Analysis

Journal of Natural Fibers, 2022
Cellulose swelling using different protic, aprotic and alkaline solvents, which are capable of penetrating crystalline parts of cellulose is one of the important methods to enhance the accessibility and, as a result, the reactivity of cellulose in ...
Fereshteh Fadavi, Ali Abdulkhani, Zahra Echresh Zadeh, Yahya Hamzeh   +3 more
doaj   +1 more source

1,4‐Brook Rearrangement of β‐Silyl Allylic Alcohols: Trisubstituted Alkenes by Copper‐Mediated Stereoretentive ipso‐Substitution Reactions

Angewandte Chemie, EarlyView.
To fully leverage the power of the ruthenium‐catalyzed trans‐hydrosilylation of propargyl alcohols, it was necessary to develop a practical and robust method for the activation of those products that carry the silyl group distal to the hydroxy substituent.
Paul Haf‐Moths, Jack L. Sutro, Alois Fürstner   +2 more
wiley   +2 more sources

Effect of Solvent and Catalyst Types on Stability and Properties of Zinc Phthalocyanine in the Organic–Inorganic Hybrid Materials

Crystals, 2021
Hybrid materials, i.e., the organically modified silicates (ORMOSIL) based on zincphthalocyanine (ZnPc) and silica glass matrix were synthesized by the sol-gel method using protic solvents (methanol, ethanol, isopropanol, butanol) and aprotic solvent (N ...
Barbara Popanda, Marcin Środa, Katarzyna Cholewa-Kowalska   +2 more
doaj   +1 more source

CO2 as a Redox Shuttle Enables Photocatalytic Dehydrogenative Decarbonylation of Biomass‐Derived Alcohols to Light Alkanes

Angewandte Chemie, Volume 138, Issue 39, 21 September 2026.
A heterogeneous photocatalytic system has been developed that enables the dehydrogenative decarbonylation of primary alcohols under visible light using highly dispersed oxidic iron sites supported on aryl‐modified graphitic carbon nitride (Fe@f–gC3N4).
Jun Hu, Wenhao Su, Chaoqin Zeng, Bruno Vinicius Manzolli Rodrigues, Nils Rockstroh, Susanna Monti, Giovanni Barcaro, Piotr Kuśtrowski, Aleksander Jaworski, Jabor Rabeah, Adam Slabon, Shoubhik Das   +11 more
wiley   +2 more sources

Kinetics and Mechanisms of Organic Reactions in Liquid Ammonia [PDF]

The rate constants for the reactions of a variety of nucleophiles reacting with substituted benzyl chlorides in liquid ammonia (LNH3) have been determined.
Ji, Pengju
core   +4 more sources

Red-Shifted Environmental Fluorophores and Their Use for the Detection of Gram-Negative Bacteria

Chemosensors, 2021
Two novel, water-soluble, merocyanine fluorophores were readily prepared by microwave-assisted synthesis. Full optical characterization was performed in a series of protic and aprotic solvents, and the dyes displayed fluorescence in the red region with ...
Alicia Megia-Fernandez, Maxime Klausen, Bethany Mills, Gillian E. Brown, Heather McEwan, Neil Finlayson, Kevin Dhaliwal, Mark Bradley   +7 more
doaj   +1 more source

Hydrothermal Reactions of Biomass-Derived Platform Molecules: Distinct Effect of Aprotic and Protic Solvents on Primary Decomposition of Glucose and Fructose in Hot-Compressed Solvent/Water Mixtures

, 2020
The study compares the effects of aprotic (i.e., gamma-valerolactone, acetone, and 1,4-dioxane) and protic (i.e., methanol and ethanol) solvents on the primary decomposition reactions of glucose and fructose, which are key biomass-derived platform ...
Zhiliang Wu (618345), Zhiliang Wu, Hongwei Wu, Hongwei Wu (9168), Bing Song (155375), Yun Yu, Yun Yu (169754), Bing Song   +7 more
core   +1 more source

Solvatochromism studies on UV spectra of 4,5-disubstituted-1,2,4-triazoline-3-thiones

Macedonian Journal of Chemistry and Chemical Engineering, 2012
The influence of a series of organic solvents on the UV spectra of investigated 1,2,4-triazoles, was studied by implementing solvatochromic theory.
Vesna B. Dimova, Nada U. Perišić-Janjić   +1 more
doaj   +1 more source