نتایج جستجو برای: epoxide

تعداد نتایج: 5021  

2009
Long He

The mol-ecule of the title compound, C(15)H(12)N(2)O(4), adopts a syn conformation with the terminal benzene rings located on the same sides of the central epoxide ring. The epoxide ring makes dihedral angles of 71.08 (18) and 60.83 (17)° with the two benzene rings. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.

Journal: :Macromolecules 2022

The curing of epoxy-anhydride vitrimers involves anionic copolymerization epoxide and anhydride along with homopolymerization excess epoxide, giving rise to a poly(ester-co-ether) network. By monitoring using infrared spectroscopy in different conditions mapping the presence OH groups, we demonstrate that generation hydroxide necessary for transesterification, exclusively relies on side reactio...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2006
Till Böcking Kristopher A Kilian Katharina Gaus J Justin Gooding

Hydrosilylation of alkenes with epoxide-terminated tri(ethylene oxide) moieties on Si-H surfaces yields homogeneous monolayers for the efficient coupling of biomolecules. The wetting properties of the epoxide-functionalized surface allow for the spotting of solutions of biomolecules, making the surface amenable to microarraying. Immobilization of thiolated DNA was achieved in a single step to f...

2013
Julian Fischer Helmut Ritter

2-Amino-N-isopropylacetamide and α-amino-ε-caprolactam were reacted with glycerol diglycidyl ether to give novel oligomeric thermoresponsive epoxide-amine adducts. These oligomers exhibit a lower critical solution temperature (LCST) behavior in water. The solubility properties were influenced with randomly methylated β-cyclodextrin (RAMEB-CD) and the curing properties of the amine-epoxide mixtu...

Journal: :The Journal of biological chemistry 1984
F S Heinemann J Ozols

Microsomal epoxide hydrolase was purified to homogeneity from phenobarbital-induced rabbit liver for the purpose of determining the complete amino acid sequence. All of the expected 11 cyanogen bromide fragments of epoxide hydrolase were isolated by a combination of gel filtration and high pressure liquid chromatography. Each was characterized by its amino acid composition and NH2-terminal amin...

2010
Tai-Ran Kang

In the title compound, C(16)H(12)N(2)O(2), both terminal benzene rings are located at the same side of the central epoxide ring, showing a cis conformation. The epoxide ring makes dihedral angles of 76.59 (10) and 62.40 (11)° with the phenyl and cyano-phenyl rings, respectively. Inter-molecular N-H⋯O and weak C-H⋯O hydrogen bonding is present in the crystal structure.

Journal: :Chemical Society reviews 2009
Christopher J Morten Jeffery A Byers Aaron R Van Dyke Ivan Vilotijevic Timothy F Jamison

This tutorial review traces the development of endo-regioselective epoxide-opening reactions in water. Templated, water-promoted epoxide-opening cyclization reactions can offer rapid access to subunits of the ladder polyethers, a fascinating and complex family of natural products. This review may be of interest to those curious about the ladder polyethers and their hypothesized biogenesis, abou...

2006
G. Clifton N. Kaplowitz

Glutathione S-transfenase activities have been identified in the small intestine of the rat. Thmreeactivities obtained with p-nitrobenzyl chloride (aralkyl), 1,2-epoxy-3-(p-nitro phenoxy)propane (epoxide), and ethacrynic acid (alkene) as substrates were present in significant amounts. Gel filtra tion indicated an elution volume for the intestinal transfer ase activities that was similar to thos...

2014
Evgeni A Larin Valeri S Kochubei Yuri M Atroshchenko

The optimal conditions for regio- and stereoselective epoxide ring opening of N,N-disubstituted 1,2-epoxy-3-aminocyclopentanes by different nucleophilic reagents have been developed. The substituents on the nitrogen atom in the epoxide precursor and the orientation of the oxirane ring are crucial for the reaction outcome. Thus, treatment of (1RS,2SR,3SR)-1,2-epoxy-3-(N,N-dibenzylamino)cyclopent...

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