Results 11 to 20 of about 29,634 (298)

Metal Catalysis Acting on Nitriles in Early Earth Hydrothermal Systems

open access: yesLife, 2023
Hydrothermal systems are areas in which heated fluids and organic molecules rush through basaltic material rich in metals and minerals. By studying malononitrile and acetonitrile, we examine the effects of metal and mineral nanoparticles on nitrile ...
Miranda Sturtz, Christopher House
doaj   +1 more source

Inverse electron-demand 1,3-dipolar cycloaddition of nitrile oxide with common nitriles leading to 3-functionalized 1,2,4-oxadiazoles [PDF]

open access: yes, 2011
A carbamoyl-substituted nitrile oxide was generated upon treatment of easily available 2-methyl-4-nitro-3-isoxazolin-5(2H)-one with THF (not dried); the reaction proceeded efficiently even in the absence of any special reagents and reaction conditions ...
1020   +15 more
core   +1 more source

Synthesis of Spiroisoxazolines by 1,3-Dipolar Cycloaddition

open access: yesMolecules, 1997
The cycloaddition of the chiral nitrile oxide 1 to 1-R-substituted 3,3-methylene-5,5-dimethyl-2-pyrrolidinones 2 (where R is H, n-butyl-, 1,1-dimethylethoxycarbonyl-, 1-methylethenyl- and acetyl-) proceeds regioselectively under the formation of ...
Peter Ertl   +3 more
doaj   +1 more source

Aryl nitrile oxide cycloaddition reactions in the presence of pinacol boronic acid ester

open access: yesBeilstein Journal of Organic Chemistry, 2012
An aryl substrate with dual functionality consisting of a nitrile oxide and a pinacolyl boronate ester was prepared by mild hypervalent iodine oxidation (diacetoxyiodobenzene) of the corresponding aldoxime, without decomposition of the boronate ...
Sarah L. Harding   +2 more
doaj   +1 more source

Telodendrimer-Based Macromolecular Drug Design using 1,3-Dipolar Cycloaddition for Applications in Biology

open access: yesMolecules, 2020
An architectural polymer containing hydrophobic isoxazole-based dendron and hydrophilic polyethylene glycol linear tail is prepared by a combination of the robust ZnCl2 catalyzed alkyne-nitrile oxide 1,3-dipolar cycloaddition and esterification chemistry.
Hossein Yazdani   +4 more
doaj   +1 more source

Selection of elastomeric membranes for the removal of volatile organics from water [PDF]

open access: yes, 1993
A wide range of homogeneous elastomeric membranes has been prepared using dicumylperoxide as a general cross-linking agent. The membranes have been used for both equilibrium sorption measurements and steady-state pervaporation experiments to study ...
Mulder, M.H.V.   +4 more
core   +2 more sources

A Convenient Synthesis of Novel Isoxazolidine and Isoxazole Isoquinolinones Fused Hybrids

open access: yesMolecules, 2023
Isoxazolidine, isoxazole, and isoquinolinone rings are present in the structure of several natural products and/or pharmaceutically interesting compounds.
Konstantinos A. Ouzounthanasis   +2 more
doaj   +1 more source

Identification of an Active Site-bound Nitrile Hydratase Intermediate through Single Turnover Stopped-flow Spectroscopy [PDF]

open access: yes, 2013
Stopped-flow kinetic data were obtained for the iron-type nitrile hydratase from Rhodococcus equi TG328-2 (ReNHase) using methacrylonitrile as the substrate.
Gumataotao, Natalie   +3 more
core   +2 more sources

A Comprehensive Analysis of the Metal–Nitrile Bonding in an Organo-Diiron System

open access: yesMolecules, 2021
Nitriles (N≡CR) are ubiquitous in coordination chemistry, yet literature studies on metal–nitrile bonding based on a multi-technique approach are rare. We selected an easily-available di-organoiron framework, containing both π-acceptor (CO, aminocarbyne)
Giulio Bresciani   +5 more
doaj   +1 more source

Effect of graphene oxide on mechanical properties of different rubbers: Experiment and molecular simulation

open access: yesHecheng xiangjiao gongye, 2023
Natural rubber (NR), styrene butadiene rubber (SBR), and carboxylated nitrile rubber (XNBR) were reinforced using graphene oxide (GO). The tensile properties and binding energy of three nanocomposites were studied through experiments and molecular ...
YANG Zi-fan1, MA Wen-xiu2, FU Quan-sheng1, WEN Yan-wei2, JIA Hong-bing1?鄢
doaj   +1 more source

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