Results 91 to 100 of about 33,029 (246)

New methods for preparing N,N-dialkyltrifluoroacetamides [PDF]

The customary preparative methods for N,N-dialkyltrifluoroacetamides involve the acylation of an amine by trifluoroacetic acid or its derivatives.
Hsu, L.
core   +1 more source

Selective NaOH-catalysed hydration of aromatic nitriles to amides [PDF]

, 2015
The authors gratefully acknowledge the Royal Society (University Research Fellowship to CSJC)The selective synthesis of aromatic and heteroaromatic amides through base-catalysed hydration of nitriles was achieved using inexpensive and commercially ...
Cazin, Catherine S.J., Gomez Herrera, Alberto, Nahra, Fady, Révolte , Antoine, Schmid, Thibault, Sneddon , Deborah, Songis, Olivier   +6 more
core   +2 more sources

Determination of protonation constants and structural correlations for some tertiary formamides and acetamides in sulfuric acid with UV spectroscopy

Macedonian Journal of Chemistry and Chemical Engineering, 2015
The protonation of ten aliphatic amides in sulfuric acid media was studied by UV spectroscopy. The pKBH+ values and solvation parameters were calculated using Yates and McClelland Method, Excess Acidity Method and Bunnett and Olsen Method.
Goran Stojković, Elizabeta Dimitrieska-Stojković, Emil Popovski   +2 more
doaj   +1 more source

Solubility, stability, and electrochemical studies of sulfur-sulfide solutions in organic solvents [PDF]

A preliminary study of the sulfur electrode in organic solvents suggests that the system warrants further investigation for use in a low temperature (100 deg to 120 C) Na-S secondary battery.
Fielder, W. L., Singer, J.
core   +1 more source

Transition metal-mediated synthesis of oxazoles [PDF]

, 2014
Among the synthetic methods for the formation of the oxazole ring, transition metal-mediated protocols are the most attractive in terms of selectivity, efficiency and mildness of reaction conditions.
Bresciani, Stefano, Tomkinson, Nicholas C. O.   +1 more
core   +1 more source

About the Direction of Selective Alkylation and Cyanoethylation of Benzimidazoles, Benzothiazoles and Benzopyrimidines

Journal of Basic and Applied Research in Biomedicine, 2022
Selective alkylation and cyanoethylation of 2H(methyl) benzimidazoles (1, 2),  benzimidazolin-2-one (3) and -2-thione (4), benzothiazolin-2-thione (5) and 2-methyl-benzopyrimidin-4-one (6, 2-methylquinazolin-4-one) have been studied.
M Olimova, B Elmuradov
doaj   +2 more sources

Imidazopyrrolone/imide copolymers Patent [PDF]

, 1970
Synthesis and chemical properties of imidazopyrrolone/imide ...
Bell, V. L., Jr., Pezdirtz, G. F.
core   +1 more source

Geminal Difunctionalization of Ketones via C─S Bond Insertion of Photogenerated Donor–Donor Diazo Compounds

Angewandte Chemie International Edition, EarlyView.
Geminal difunctionalization of readily available building blocks provides rapid access to molecular complexity. This work introduces a strategy for installing two distinct functional groups on a carbonyl carbon by transforming it into a donor–donor diazo compound, enabling both batch and flow applications with broad solvent compatibility.
Vincent George, Aryaman Pattanaik, Daniel Maddox, Lukas M. Sigmund, Giovanna Mejia, Sara Pahlén, Simon O. Angerer, Maria Schmoll, Lisa Marie Schneider, Nidhal Selmi, Mikhail Kabeshov, Giulia Bergonzini, Julia Rehbein, Burkhard König   +13 more
wiley   +1 more source

Synthesis of 6- or 8-Carboxamido Derivatives of Imidazo[1,2-a]pyridines via a Heterogeneous Catalytic Aminocarbonylation Reaction

Molecules
Imidazo[1,2-a]pyridines and especially their amide derivatives exhibit a wide range of favourable pharmacological properties. In this work, Pd-catalysed carbonylation was used for the first time for the introduction of the carboxamide moiety into ...
Enikő Nagy, Attila Máriás, Margit Kovács, Rita Skoda-Földes   +3 more
doaj   +1 more source

Unified metal-free intermolecular Heck-type sulfonylation, cyanation, amination, amidation of alkenes by thianthrenation

Nature Communications
Direct and site-selective C-H functionalization of alkenes under environmentally benign conditions represents a useful and attractive yet challenging transformation to access value-added molecules.
Ming-Shang Liu, Hai-Wu Du, Huan Meng, Ying Xie, Wei Shu   +4 more
doaj   +1 more source