Results 241 to 250 of about 14,155 (281)

Palladium-Catalyzed Aerobic α,β-Dehydrogenation of Aliphatic Amides

The Journal of Organic Chemistry, 2022
A Pd(II)-catalyzed α,β-dehydrogenation of substituted aliphatic amides assisted by a reusable bis-chelating 8-aminoquinoline ligand is demonstrated. Broad spectra of β-substituted including olefin-substituted aliphatic amides are well tolerated. The present protocol efficiently dehydrogenates the less acidic aliphatic amides via the chelation-assisted ...
Meledath Sudhakaran Keerthana, Masilamani Jeganmohan   +1 more
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Synthesis of novel naphthoquinone aliphatic amides and esters and their anticancer evaluation

European Journal of Medicinal Chemistry, 2013
Fourteen new naphthoquinone aliphatic amides and seventeen naphthoquinone aliphatic esters were synthesized in nine to ten steps from 1-hydroxy-2-naphthoic acid with 9-25% overall yield for the amides, and 16-21% overall yield for the esters. The key step of the amide synthesis is a coupling reaction between amine and various aliphatic acids using 4-(4,
Boonsong, Kongkathip, Sunisa, Akkarasamiyo, Komkrit, Hasitapan, Pichamon, Sittikul, Nonlawat, Boonyalai, Ngampong, Kongkathip   +5 more
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Cu-catalysed transamidation of unactivated aliphatic amides

Organic & Biomolecular Chemistry, 2022
Direct transamidation is gaining prominence as a ground-breaking technique that generates a wide variety of amides without the requirement of acid–amine coupling or other intermediate steps.
Vishal Kumar, Sanjeev Dhawan, Renu Bala, Sachin Balaso Mohite, Parvesh Singh, Rajshekhar Karpoormath   +5 more
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Photoredox‐Catalyzed Defluorinative Functionalizations of Polyfluorinated Aliphatic Amides and Esters

Angewandte Chemie International Edition, 2022
AbstractSelective C−F bond functionalization of perfluoalkyl units has huge potential towards accessing functionalized organofluorinated compounds, but remains challenging due to the high C−F bond strength and inherent selectivity challenges. We report a new catalytic approach to the selective functionalization of strong C−F bonds in polyfluorinated ...
Jian‐Heng Ye, Peter Bellotti, Corinna Heusel, Frank Glorius   +3 more
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AMIDE METABOLISM IN YEAST: III. ALIPHATIC AMIDE METABOLISM IN CANDIDA UTILIS

Canadian Journal of Microbiology, 1961
The partial purification and the properties of propionamide, valeramide, and hexanamide deamidases are described. The purified deamidases hydrolyzed propionamide, valeramide, and hexanamide to form ammonia and corresponding fatty acids. Maximum enzyme activity was obtained at 37 °C over a pH range of 6.7 to 7.8. The enzymes were inactivated at 55 °C in
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Process for detecting Helicobacter pylori using aliphatic amides

Analytical and Bioanalytical Chemistry, 2011
Helicobacter pylori diagnosis is fundamental in the management of gastrointestinal pathologies, whose current clinical guidelines support a non-invasive 'test-and-treat' strategy. As such, the present work reports the basis of a new, low-cost, specific breath test based on the detection of volatile carboxylic acids resulting from the hydrolysis of ...
José A, Ferreira, Elsa, Dias, Sílvia M, Rocha, Manuel A, Coimbra   +3 more
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Controlled-potential oxidation of aliphatic amides

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1967
Abstract A systematic study of the electrochemical oxidation of primary, secondary and tertiary aliphatic amides at platinum electrodes in aprotic solvents is reported. Results of product analyses, coulometry and cyclic voltammetry are presented. A mechanism is proposed which involves two different paths to stable products.
Jerry F. O'Donnell, Charles K. Mann
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Determination of aliphatic amides by controlled-potential coulometry

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1967
Abstract The determination of a number of aliphatic amides in acetonitrile—LiClo 4 solution by controlled-potential oxidation at a platinum anode has been studied. The method gives an average precision of about 1% over a range of sample size from 0.2–2.0 mmoles.
Jerry F. O'Donnell, Charles K. Mann
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Studies relating to the hydrolysis of aliphatic amides

1950
The work described in this thesis is concerned with problems connected with the hydrolysis of the amide group but, although the whole investigation thus has a common theme, it falls conveniently into three divisions, dealing with γ amino butyramide, malonic acid amides and oxalic acid amides respectively. A study of the hydrolysis of γ amino butyramide
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Ternary complexes of uranyl beta-diketones with aliphatic amides

Polyhedron, 1991
Abstract Ternary adducts of uranyl beta-diketone chelates [beta-diketones = 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (PMBP), 1-phenyl-3-methyl-4-acetyl-pyrazolone-5 (PMAP) and thenoyltrifluoroacetone (TTA)] and dibutyl derivatives of hexanamide (DBHA), octanamide (DBOA) and decanamide (DBDA) have been isolated and characterized as UO2(beta-diketone)2·
P.B. Ruikar, M.S. Nagar, M.S. Subramanian   +2 more
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