Results 11 to 20 of about 4,881 (175)

Modular, Tricomponent, and Concurrent One-Pot Synthesis of Libraries of γ-Keto Sulfones and γ-Keto Phosphine Oxides using Brønsted Acidic Eutectic Mixtures. [PDF]

open access: yesChemSusChem
This study presents a sustainable, metal‐free, one‐pot synthesis of γ‐keto sulfones and phosphine oxides using a ChCl/p‐TSA·H2O eutectic mixture. The method enables regioselective CC and CX bond formation under mild conditions, aligning with Green Chemistry Principles.
Ramos-Martín M   +2 more
europepmc   +2 more sources

Sulphur Analogues of Homoisoflavonoids as Potential Treatments for Neovascular Eye Diseases. [PDF]

open access: yesChemMedChem
Neovascular eye diseases are characterised by the abnormal growth of often fragile blood vessels in the eye. Treatment focuses on reducing angiogenesis as well as reducing oxidative stress induced inflammation, a key underlying cause. Synthetic sulphur analogues of naturally occurring homoisoflavonoids, synthesised in three steps, have shown promise as
Hiles JD   +9 more
europepmc   +2 more sources

Synthesis, Chemistry and Applications of 5-Hydroxymethyl-furfural And Its Derivatives [PDF]

open access: yes, 2001
The prospect of exciting research activity in the chemistry of furfural derived compounds such as 5-hydroxymethylfurfural (HMF), 2,5-furandicarbaldehyde and 2,5-furan-dicarboxylic acid prompted the writing of this article.
Lewkowski, Jarosław
core   +1 more source

Synthesis and Antibacterial Activity of Chalcones and Pyrimidine-2-ones

open access: yesE-Journal of Chemistry, 2005
Some new chalcones have been prepared by Claisen-schmidt condensation of ketone and different aromatic aldehydes. These chalcones on condensation with urea in presence of acid gave Pyrimidine-2-ones.
A. K. Parekh, K. K. Desai
doaj   +1 more source

3-(2-Fluorophenyl)-1-(4-methoxyphenyl)prop-2-en-1-one

open access: yesActa Crystallographica Section E, 2009
The title compound, C16H13FO2, was prepared from 4-methoxyhypnone and 2-fluorobenzophenone by a Claisen–Schmidt condensation reaction. The dihedral angle between the two benzene rings is 31.99 (2)°.
Huan-Mei Guo
doaj   +1 more source

Genetics of Polyketide Metabolism in Aspergillus nidulans [PDF]

open access: yes, 2012
metabolite
Adams   +62 more
core   +11 more sources

STUDY OF THE SYNTHESIS METHODS OF 1,3-ARYL(HETERYL)PROPENONE

open access: yesStudia Universitatis Moldaviae: Stiinte reale si ale naturii, 2022
In this work, we refer to the study of recent specialized literature, where some syntheses methods of chalcone derivatives are described. These substances show a very pronounced anticancer activity, having a protective action in the cellular system ...
USM ADMIN
doaj  

Synthesis and Spectral Characterization of Some New Substituted Bis-spirocyclohexanones Derived from Acetone

open access: yesScience Journal of University of Zakho, 2018
Diarylidene acetones (DAA) (1-5) had been prepared by the condensation of acetone with substituted benzaldehydes via Claisen-Schmidt reaction, DAA’s brought to condense with anthrone to afford the title compounds (6-10) through Michael addition.
Mohammed S. Hussein   +2 more
doaj   +1 more source

Chalcones as versatile synthons for the synthesis of 5- and 6-membered nitrogen heterocylces [PDF]

open access: yes, 2014
Chalcones belong to the flavonoid family which constitutes one of the major classes of naturally occurring oxygen heterocyclic compounds. The alpha,beta-unsaturated carbonyl system of chalcones possesses two electrophilic reactive centers allowing them ...
Albuquerque, Hélio   +3 more
core   +1 more source

The Synthesis and Spectral Properties of Benzofuran Derivative bis-Chalcone

open access: yesHittite Journal of Science and Engineering, 2018
Khellin, a natural furanochromone, was isolated from the fruits of Ammi visnaga L. by using a rapid and easy technique. It was then hydrolyzed with 10% KOH to obtain khellinone. From the Claisen-Schmidt condensation of khellinone with terephthalaldehyde,
Neslihan Beyazit
doaj   +1 more source

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