نتایج جستجو برای: imine

تعداد نتایج: 2790  

2016
Yan Qiao Xinhuan Chen Donghui Wei Junbiao Chang

Hydroacylation reactions and aza-benzoin reactions have attracted considerable attention from experimental chemists. Recently, Wang et al. reported an interesting reaction of N-heterocyclic carbene (NHC)-catalyzed addition of aldehyde to enamide, in which both hydroacylation and aza-benzoin reactions may be involved. Thus, understanding the competing relationship between them is of great intere...

2013
Kirill V. Zaitsev Sergey S. Karlov Yulia A. Piskun Irina V. Vasilenko Andrei V. Churakov

In the title compound, [Ti2(C16H14N2O2)2O2]·2CHCl3, the Ti(IV) atom in the centrosymmetric complex has a distorted octa-hedral N2O4 coordination environment and is linked via two μ2-oxido bridges into a dinuclear centrosymmetric com-plex, with a Ti⋯Ti separation of 2.7794 (8) Å. In the salen (N,N'-ethyl-enebis(salicyl-imine)) ligand, the two salicyl-imine units make a dihedral angle of 45.31 (5...

Journal: :The Journal of chemical physics 2011
Sina Yeganeh Troy Van Voorhis

Describing kinetic processes within a perturbation theory approach such as Fermi's golden rule requires an understanding of the initial and final states of the system. A number of different methods have been proposed for obtaining these diabatic-like states, but a robust criterion for evaluating their accuracy has not been established. Here, we approach the problem of determining the most appro...

Journal: :J. Chem. Soc., Trans. 1913

Journal: :Current Opinion in Plant Biology 2021

Imine chemistry represents an important category of chemical reactions involved in the biosynthesis plant natural products, ranging from newly discovered mobile defense hormone N-hydroxy-pipecolic acid to red-to-yellow tyrosine-derived betalain pigments. Spontaneous imine formation have also served as basis for evolution numerous metabolic enzymes, such specialized Pictet-Spenglerases that prod...

Journal: :International Journal of Biological Macromolecules 2021

Imine dynamic hydrogels are synthesized via dual-imine bond crosslinking from O-carboxymethyl chitosan (CMCS) and a water soluble dynamer using ‘green’ approach. Three dynamers prepared through reaction of benzene-1,3,5-tricarbaldehyde di-amino Jeffamine with molar mass 500, 800 1900, respectively. Hydrogels, namely H500, H800 H1900 then obtained by mixing CMCS aqueous solutions. FT-IR confirms...

With the aim of obtaining information about drug-drug interaction (DDI) between acetaminophen and some of antidepressant drugs (fluoxetine, sertraline and nortriptyline), in the present work we studied the electrochemical oxidation of acetaminophen (paracetamol) in the presence of these drugs by means of cyclic voltammetry and Controlled-potential coulometry. The reaction between N-acetyl-p-ben...

Journal: :Chemical communications 2014
Jillian A Hatnean Jordan W Thomson Preston A Chase Douglas W Stephan

Di-isobutylaluminum hydride and tri-iso-butylaluminum (DIBAL 1, TIBAL 2) are shown to be efficient hydrogenation catalysts for a variety of imines at 100 °C and 100 atm of H2, operating via a hydroalumination/hydrogenolysis mechanism.

Journal: :Drug metabolism and disposition: the biological fate of chemicals 2009
Xiaohai Li Yuanjun He Claudia H Ruiz Marcel Koenig Michael D Cameron Tomas Vojkovsky

Dasatinib was approved in 2006 for the treatment of imatinib-resistant chronic myelogenous leukemia and functions primarily through the inhibition of BCR-ABL and Src kinase. Dasatinib is extensively metabolized in humans by CYP3A4. In this study, we report that the bioactivation of dasatinib by CYP3A4 proceeds through a reactive intermediate that leads to CYP3A4 inactivation with K(I) = 6.3 mic...

Journal: :Chemical communications 2008
Michael Mastalerz

A simple approach by reversible imine condensation to shape-persistent endo-functionalised nanocage compounds is presented.

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