Results 91 to 100 of about 14,155 (281)

Hydrolysis of amides: a kinetic study of substituent effects on the acidic and basic hydrolysis of aliphatic amides

open access: yes, 2009
Kinetic rate constants over a range of temperature, enthalpies of activation and entropies of activation have been measured for the dilute acid hydrolysis of fourteen aliphatic amides together with similar data for the alkaline hydrolysis of thirteen ...
Grahame Leslie Jackson (20158971)
core  

Nickel-Catalyzed Direct Thiolation of C(sp3)–H Bonds in Aliphatic Amides

open access: yes, 2015
Nickel-catalyzed thiolation of the inactivated methyl C­(sp3)–H bonds of aliphatic amides with disulfide is described. It is a novel strategy for the synthesis of thioethers with the ultimate goal of generating thioether carboxylic acids with various ...
Xinhua Xu (1478995)   +6 more
core   +1 more source

Ceramide-like synthetic amides that inhibit cerebroside galactosidase

open access: yesJournal of Lipid Research, 1972
Amides resembling ceramide (fatty acyl sphingosine) were synthesized and tested for their effects on rat brain cerebrosidase (galactosyl ceramide β-galactosidase).
Ramesh C. Arora, Norman S. Radin
doaj   +1 more source

Ligand-Enabled β-C(sp3 )-H Lactamization of Tosyl-Protected Aliphatic Amides Using a Practical Oxidant. [PDF]

open access: yesAngew Chem Int Ed Engl, 2022
Zhuang Z   +6 more
europepmc   +1 more source

Comparative Analysis of the Conversion of Mandelonitrile and 2-Phenylpropionitrile by a Large Set of Variants Generated from a Nitrilase Originating from Pseudomonas fluorescens EBC191

open access: yesMolecules, 2019
The arylacetonitrilase from the bacterium Pseudomonas fluorescens EBC191 has been intensively studied as a model to understand the molecular basis for the substrate-, reaction-, and enantioselectivity of nitrilases.
Andreas Stolz   +3 more
doaj   +1 more source

Studies on the Stability of Amides. I. Hydrolysis Mechanism of N-Substituted Aliphatic Amides

open access: yesChemical and Pharmaceutical Bulletin, 1972
The kinetics of hydrolyses of N-substituted aliphatic amides was studied spectro-photometrically in aqueous solution at 30-95°. In concentrated hydrochloric acid solution up to 2.0M, the observed rate constants were found to increase to a constant value. Activation entropies for acidic hydrolyses of N-alkyl acetamides were largely negative, ranging -18-
YAMANA, TSUKINAKA   +4 more
openaire   +2 more sources

Palladium-Catalyzed Selective β‑Arylation of Aliphatic Amides Using a Removable N,O‑Bidentate Auxiliary

open access: yes, 2015
A new method for palladium-catalyzed β-arylation of aliphatic and cycloaliphatic amides without conventional silver salts utilizing 2-aminopyridine-1-oxide moiety (PyO) as an N,O-bidentate group has been developed.
Xue-Mei Zhao (1533076)   +5 more
core   +1 more source

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

open access: yesMacedonian 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   +2 more
doaj   +1 more source

Versatile and chemoselective transformation of aliphatic and aromatic secondary amides to nitriles [PDF]

open access: yes, 2015
通讯作者地址: Huang, PQTriflic anhydride in combination with 2-fluoropyridine effectively dehydrates secondary amides to afford nitriles under mild reaction conditions.
Hui Geng, Pei-Qiang Huang, 黄培强
core  

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

open access: yesJournal 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

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