Results 31 to 40 of about 67,475 (292)
Water and Aqueous Mixtures as Convenient Alternative Media for Organoselenium Chemistry
Even if water is the natural environment for bioorganic reactions, its use in organic chemistry is often severely limited by the high insolubility of the organic derivatives.
Claudio Santi +5 more
doaj +1 more source
Catalytic Annulation of Epoxides with Heterocumulenes by the Indium-Tin System
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
Organocatalyzed enantioselective desymmetrization of aziridines and epoxides
Enantioselective desymmetrization of meso-aziridines and meso-epoxides with various nucleophiles by organocatalysis has emerged as a cutting-edge approach in recent years.
Ping-An Wang
doaj +1 more source
Oxidation of cycloalkene using supported ruthenium catalysts under solvent-free conditions [PDF]
The present paper employs supported ruthenium nanoparticles alongside catalytic quantities of the radical initiator, which are proven to be capable of cyclooctene oxidation with green conditions, in the absence of solvent, with air as the main oxidant ...
Alsaiari Raiedhah Abdullah
doaj +1 more source
An Efficient Perlite/Fe3O4 Magnetic Nanocatalyst for Carbon Dioxide Fixation Under Solvent-free Conditions at Atmospheric Pressure of CO2 [PDF]
The increasing reliance, on fuels has led to an increase in the levels of carbon dioxide causing concerning outcomes like climate change and global warming. In response to this problem, there is a solution; CO2 fixation.
Farshid Eskandari, Mohammad Bayat
doaj +1 more source
SYNTHESIS OF PINONIC ACID NEW DERIVATIVES [PDF]
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
Recent Developments in Stereoselective Reactions of Sulfonium Ylides
This review describes advances in the literature since the mid-1990s in the area of reactions of sulfonium ylide chemistry, with particular attention paid to stereoselective examples.
Mukulesh Mondal +4 more
doaj +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
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
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
Natural products target the aging kidney in diabetic nephropathy by restoring the AMPK–SIRT1–Nrf2 axis, reducing oxidative stress, inflammation, fibrosis, and cellular senescence while enhancing mitochondrial biogenesis and antioxidant defenses.
Sherif Hamidu +8 more
wiley +1 more source

