Results 31 to 40 of about 121,502 (357)

Greener and sustainable method for alkene epoxidations by polymer-supported Mo(VI) catalysts [PDF]

open access: yes, 2009
A polybenzimidazole supported Mo(VI) (PBI.Mo) catalyst has been prepared and characterised. The catalytic activities of the PBI.Mo catalyst in epoxidation of alkenes with tert-butyl hydroperoxide (TBHP) as an oxidant have been studied under different ...
Ambroziak, K.   +3 more
core   +2 more sources

Ring-opening copolymerization (ROCOP): synthesis and properties of polyesters and polycarbonates [PDF]

open access: yes, 2015
Controlled routes to prepare polyesters and polycarbonates are of interest due to the widespread application of these materials and the opportunities provided to prepare new copolymers. Furthermore, ring-opening copolymerization may enable new poly(ester–
Brooks, R   +5 more
core   +1 more source

2,6-exo-8,10-exo-4-Butyl-9-oxa-4-azatetracyclo[5.3.1.02,6.08,10]undecane-3,5-dione

open access: yesMolbank, 2022
The title epoxide was obtained by spontaneous epoxidation of the corresponding unsaturated imide in air or by peracid oxidation. Unambiguous assignment of the 1H- and 13C-NMR spectra is achieved by comparison between analogous compounds and its X-ray ...
R. Alan Aitken   +2 more
doaj   +1 more source

Soluble Epoxide Hydrolase Inhibition for Ocular Diseases: Vision for the Future [PDF]

open access: yes, 2019
Ocular diseases cause visual impairment and blindness, imposing a devastating impact on quality of life and a substantial societal economic burden. Many such diseases lack universally effective pharmacotherapies.
Corson, Timothy W., Park, Bomina
core   +1 more source

SYNTHESIS OF PINONIC ACID NEW DERIVATIVES [PDF]

open access: yesChemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2008
The method for synthetising new derivatives of the pinonic acid using, at the key step, the reaction of condensation with epichlorohydrin, has been elaborated.
Alexandru Gudima   +2 more
doaj  

Azetidine synthesis by La(OTf)3-catalyzed intramolecular regioselective aminolysis of cis-3,4-epoxy amines

open access: yesFrontiers in Chemistry, 2023
Azetidine is a prevalent structural motif found in various biologically active compounds. In this research paper, we report La(OTf)3-catalyzed intramolecular regioselective aminolysis of cis-3,4-epoxy amines to afford azetidines.
Yuse Kuriyama   +2 more
doaj   +1 more source

Ab-initio transport fingerprints for resonant scattering in graphene [PDF]

open access: yesPhys. Rev. B 86, 235417 (2012), 2012
We have recently shown that by using a scaling approach for randomly distributed topological defects in graphene, reliable estimates for transmission properties of macroscopic samples can be calculated based even on single-defect calculations [A. Uppstu et al., Phys. Rev. B 85, 041401 (2012)].
arxiv   +1 more source

Catalytic Annulation of Epoxides with Heterocumulenes by the Indium-Tin System

open access: yesMolecules, 2018
In the synthesis of five-membered heterocycles by the annulation of epoxides with heterocumulenes such as carbon dioxide and isocyanates, we developed the indium-tin catalytic system and synthesized various cyclic adducts including novel types products ...
Itaru Suzuki   +3 more
doaj   +1 more source

Aspochalasin H1: A New Cyclic Aspochalasin from Hawaiian Plant-Associated Endophytic Fungus Aspergillus sp. FT1307

open access: yesMolecules, 2021
Aspergillus is one of the most diverse genera, and it is chemically profound and known to produce many biologically active secondary metabolites. In the present study, a new aspochalasin H1 (1), together with nine known compounds (2–10), were isolated ...
Mallique Qader   +5 more
doaj   +1 more source

Enantioselective Synthesis of 5-epi-Citreoviral Using Ruthenium-Catalyzed Asymmetric Ring-Closing Metathesis [PDF]

open access: yes, 2009
Chiral ruthenium olefin metathesis catalysts can perform asymmetric ring-closing reactions in ≥90% ee with low catalyst loadings. To illustrate the practicality of these reactions and the products they form, an enantioselective total synthesis of 5-epi ...
Funk, Timothy W.
core   +2 more sources

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