Results 51 to 60 of about 53,724 (334)

Recent Advances in bis-Chalcone-Based Photoinitiators of Polymerization: From Mechanistic Investigations to Applications

open access: yesMolecules, 2021
Over the past several decades, photopolymerization has become an active research field, and the ongoing efforts to develop new photoinitiating systems are supported by the different applications in which this polymerization technique is involved ...
Nicolas Giacoletto, Frédéric Dumur
doaj   +1 more source

Reaction of chalcones with phenylhydrazine [PDF]

open access: yesPharmaceutical Chemistry Journal, 1976
AbstractChalkone (I) reagieren mit Phenylhydrazin (II) zu Pyrazolinen (III) (Ausbeute 38 ‐ 72%).
Yakovenko V.I.   +3 more
openaire   +4 more sources

Synthetic and Antimicrobial Studies of Some new Chalcones of 3-Bromo-4-(p-tolyl sulphonamido) acetophenone

open access: yesE-Journal of Chemistry, 2004
Eleven new chalcones have been sysnthesised by condensing 3-bromo-4-(p-tolyl sulphonamido) acetophenone with different aromatic aldehydes using the method or Rohrman et al. The antimicrobial activity of these chalcones has been tested by adopting “paper
Miss Rashmi Jain   +2 more
doaj   +1 more source

Determination of the lipophilicity of 2'-hydroxychalcones by RP HPLC method [PDF]

open access: yesHemijska Industrija, 2016
Lipophilicity of twelve synthesized chalcones, whose ring B is a ortho, meta or para monosubstituted with alkyl, oxyalkyl groups or halogens was determined by reverse phase liquid chromatography, using octadecyl-functionalized (RP-18) silica gel
Bašić Jasmina V.   +4 more
doaj   +1 more source

Chalcones Isolated from Arrabidaea brachypoda Flowers as Inhibitors of NorA and MepA Multidrug Efflux Pumps of Staphylococcus aureus

open access: yesAntibiotics, 2020
Bacterial resistance to antibiotics has become a public health issue around the world. The present study aimed to evaluate the antibacterial activity of chalcones isolated from flowers of Arrabidaea brachypoda, and their potential as efflux pump ...
Luis Mário Rezende-Júnior   +12 more
semanticscholar   +1 more source

Synthesis, spectral correlation and insect antifeedant activities of some 2-benzimidazole chalcones

open access: yesJournal of Saudi Chemical Society, 2016
Some substituted styryl 2-benzimidazole ketones have been synthesised by fly-ash:H2SO4 catalysed aldol condensation of 2-benzimidazole methyl ketone and various substituted benzaldehydes in microwave oven. The yields of these chalcones are more than 70%.
P. Janaki, K.G. Sekar, G. Thirunarayanan
doaj   +1 more source

Green Synthesis of Chalcone Derivatives Using Chalcones as Precursor

open access: yes, 2022
Recently, the use of green methodologies like sonication, use of ionic liquids, etc. attracted the attention of researchers in the field of organic synthesis as they have advantages such as mild reaction conditions, environmentally benign procedures, etc.
Surbhi, Dhadda,   +2 more
openaire   +2 more sources

A Comprehensive Review of Aminochalcones

open access: yesMolecules, 2020
Chalcones, members of the flavonoid family, display a plethora of interesting biological activities including but not limited to antioxidant, anticancer, antimicrobial, anti-inflammatory, and antiprotozoal activities.
Rimsha Irfan   +3 more
doaj   +1 more source

Synthesis of New Pyrazolines Derivatives from Coumarine Compounds [PDF]

open access: yesمجلة التربية والعلم, 1999
The present work includes preparation of series of chalcones and condensation of these chalcones with a series of prepared coumarin hydrazides in acidic medium to afford the new pyrazolines.
W. Gh-Bedewy, O. Salih, A. Ahmad
doaj   +1 more source

Reaction of Chalcones with Cellular Thiols. The Effect of the 4-Substitution of Chalcones and Protonation State of the Thiols on the Addition Process. Diastereoselective Thiol Addition

open access: yesMolecules, 2021
Several biological effects of chalcones have been reported to be associated with their thiol reactivity. In vivo, the reactions can result in the formation of small-molecule or protein thiol adducts.
Fatemeh Kenari   +2 more
doaj   +1 more source

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