Results 21 to 30 of about 995,504 (317)
Scope and limitations of a DMF bio-alternative within Sonogashira cross-coupling and Cacchi-type annulation [PDF]
Beilstein Journal of Organic Chemistry, 2016 Pd-catalysed C–C bond formation is an essential tool within the pharmaceutical and agrochemical industries. Many of these reactions rely heavily on polar aprotic solvents; however, despite their utility, these solvents are incompatible with the drive ...
Kirsty L. Wilson +5 more
doaj +3 more sources
Dehydration of cellulose to levoglucosenone using polar aprotic solvents
Energy and Environmental Science, 2015 Herein, we report an approach to produce levoglucosenone (LGO) from cellulose in yields up to 51% under mild reaction conditions (170–230 °C; 5–20 mM H2SO4) using polar, aprotic solvents such as tetrahydrofuran (THF).
Fei Cao +5 more
semanticscholar +3 more sources
Applied Catalysis B: Environmental, 2014 Effects of nitrogen compounds, aromatics, and aprotic solvents on the oxidative desulfurization (ODS) of refractory sulfur compounds and light cycle oil over Ti-SBA-15 catalyst were studied in a batch or a continuous fixed-bed reactor with tert-butyl ...
Kye-Sung Cho, Yong-Kul Lee
semanticscholar +3 more sources
Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents, Part I: Pyridine mono-carboxylic acids [PDF]
Journal of the Serbian Chemical Society, 2005 Rate constants for the reaction of diazodiphenylmethane with isomeric pyridine carboxylic acids were determined in chosen protic and aprotic solvents at 30 °C, using the well known UV spectrophotometric method.
Marinković Aleksandar D. +3 more
doaj +1 more source
Analytical Chemistry, 2020 Many applications in modern electrochemistry, notably electrosynthesis and energy storage/conversion take advantage of the "tunable" physicochemical properties (e.g., proton availability and/or electrochemical stability) of non-aqueous (e.g., aprotic ...
Cameron L. Bentley +2 more
semanticscholar +1 more source
Metal complexes of bilirubin in aprotic solvents [PDF]
Biochemical Journal, 1973 Bilirubin reacts with zinc acetate, cadmium acetate or cobaltous acetate in dry dipolar aprotic solvents to form highly coloured complexes. The complex formed in NN-dimethylformamide can be isolated as a solid with bilirubin:zinc:acetate:NN-dimethylformamide molar proportions of 1:3:2:2.
D W, Hutchinson, B, Johnson, A J, Knell
openaire +2 more sources
BMC Chemistry, 2021 Background Carbon dots (C-dots) are photoluminescent nanoparticles with less than 10 nm in size. Today, many studies are performed to exploit the photoluminescence (PL) property of carbon dots, and our focus in this study is to estimate the dipole moment
Parisa Mohammad-Jafarieh +4 more
doaj +1 more source
Influence of New Aprotic Electrolytes on Negative Electrode Materials for Lithium-ion Batteries
International Journal of Electrochemical Science, 2015 This paper briefly describes experiments which investigate mutual compatibility of aprotic solvents and negative electrode materials. The work follows the current trend of enhancing fire safety by using new kinds of aprotic solvents.
Josef Máca +4 more
doaj +1 more source
Ultrafast Intramolecular Charge Transfer of Formyl Perylene Observed Using Femtosecond Transient Absorption Spectroscopy [PDF]
, 2010 The excited-state photophysics of formylperylene (FPe) have been investigated in a series of nonpolar, polar aprotic, and polar protic solvents. A variety of experimental and theoretical methods were employed including femtosecond transient absorption (
Mohammed, Omar F.
core +1 more source
Conformational Preferences of 3-(Dimethylazinoyl)propanoic Acid as a Function of pH and Solvent; Intermolecular versus Intramolecular Hydrogen Bonding [PDF]
, 2009 The conformational equilibrium of 3-(dimethylazinoyl)propanoic acid (DMAPA, azinoyl = N^+(O^−) has a weak pH-dependence in D_2O, with a slight preference for trans in alkaline solutions.
Alley, Olivia J. +5 more
core +2 more sources