Results 91 to 100 of about 14,155 (281)
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
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
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]
Zhuang Z +6 more
europepmc +1 more source
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
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
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
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]
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
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

