7570-47-0Relevant articles and documents
Trichloroisocyanuric acid (TCCA) and carboxamide interactions in TCCA/NaNO2 triggered nitration of pyrrole and indole in aqueous aprotic media: A kinetic correlation of solvent properties with reactivity
Duguta, Govardhan,Muddam, Bhooshan,Kamatala, Chinna Rajanna,Utkoor, Umesh Kumar
, p. 164 - 186 (2020/10/02)
This study deals with the trichloroisocyanuric acid (TCCA) interactions with carboxamides like formamide (FMA), N,N′-dimethyl formamide (DMF), and N,N′-dimethyl acetamide (DMA) interactions during the nitration of heterocyclic compounds (HC) like pyrrole and indole in the presence of excess of [NaNO2] over the concentrations of all other reactants. All the reactions were performed in aqueous acetonitrile media containing carboxamide under acid-free conditions. Kinetics of the reactions revealed first order in [nitrating agent] and [HC] under otherwise similar conditions. To gain an insight into the reactive species and role of added carboxamide (FAA, DMF, DMA, etc.), the observed rates of the nitration reaction (log k) were analyzed as a function of (1/D), ([D ? 1]/[2D + 1]), mole fraction (nx), and volume (%) of carboxamide, 1/viscosity, density refractive index function), and Hildebrand solubility parameter plots. Linear regression analysis gave very good correlation coefficients (R2 values), which indicate the importance of several solvent properties in addition to the role of dielectric constant (D) of the reaction media. Multiple linear solvent energy relationships suggested by Abraham, Koppel, Palm, and Taft also afforded very good correlation coefficient (R2 values), showing the importance of cumulative effect of solvent properties. Besides these features, the negative entropies of activation (?S#) suggest greater solvation in the transition state. Isokinetic temperature (β) values for different protocols were very close to the experimental temperature range (303-323 K), indicating the importance of both enthalpy and entropy factors in controlling the reaction.
On the mechanism for the photooxidation of aromatic azides containing a secondary N–H bond: A sequence of intramolecular transformations with the formation of heterocyclic oximes
Chainikova, Ekaterina,Khursan, Sergey,Yusupova, Alfia,Lobov, Alexander,Abdullin, Marat,Safiullin, Rustam
supporting information, p. 3267 - 3271 (2018/07/25)
During the photooxidation of aromatic azides containing a secondary N–H bond at the para-position, a sequence of intramolecular transformations of nitroso oxides led to the formation of heterocyclic oximes along with the corresponding nitroso and nitro co
PROTEASOME ACTIVITY ENHANCING COMPOUNDS
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Page/Page column 167, (2015/06/03)
The present invention is directed to compounds having the Formula (I), (II), (III), (IV), and (V), compositions thereof, the methods of synthesis of the compouds of interest, and to methods for the treatment of a condition associated with a dysfunction in proteostasis, such as cancer, inflammatory conditions, neurodegeneration, metabolic conditions, comprising administering an effective amount of a compound of the invention.