Results 21 to 30 of about 4,881 (175)

(E)-3-Methyl-6-(3-oxo-3-(thiophen-2-yl)-1-propenyl)-2(3H)-benzothiazolone

open access: yesMolbank, 2016
The title compound, (E)-3-methyl-6-(3-oxo-3-(thiophen-2-yl)-1-propenyl)-2(3H)-benzothiazolone, was synthesized by Claisen-Schmidt condensation of 3-methyl-2(3H)-benzothiazolone-6-carbaldehyde with 2-acetylthiophene in 94% yield.
Yordanka Ivanova   +3 more
doaj   +1 more source

Synthesis and Chemical Reactivity of Novel Polyhydroxylated Bis-Chalcones

open access: yesMedical Sciences Forum, 2022
Chalcones, a class of compounds characterized by two aromatic rings linked through a three carbon α,β-unsaturated carbonyl system, aroused widespread interest due to their (bio)synthesis and broad biological activities.
Rui Pereira   +4 more
doaj   +1 more source

Asphaltene oxide promotes a broad range of synthetic transformations [PDF]

open access: yes, 2019
Carbocatalysts, which are catalytically-active materials derived from carbon-rich sources, are attractive alternatives to metal-based analogs. Graphene oxide is a prototypical example and has been successfully employed in a broad range of synthetic ...
Bielawski, Christopher W., Jung, Hyosic
core   +2 more sources

5-[3-(4-Bromophenyl)-1-(2,5-dimethoxyphenyl)-3-oxopropyl]-1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-tri-one

open access: yesMolbank, 2018
The title compound was prepared by a two-step reaction. The first step was the formation of a chalcone derivative using Claisen–Schmidt condensation, which was followed by the Michael addition of the formed chalcone with 1,3-dimethylbarbituric acid.
Hery Suwito   +3 more
doaj   +1 more source

Toward a Symphony of Reactivity: Cascades Involving Catalysis and Sigmatropic Rearrangements [PDF]

open access: yes, 2014
Catalysis and synthesis are intimately linked in modern organic chemistry. The synthesis of complex molecules is an ever evolving area of science. In many regards, the inherent beauty associated with a synthetic sequence can be linked to a certain ...
Jones, Amanda C.   +3 more
core   +1 more source

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

Mechanism and Application of Baker–Venkataraman O→C Acyl Migration Reactions [PDF]

open access: yes, 2014
This literature review focuses on the O→C acyl migration of aryl esters to yield the corresponding 1,3-dicarbonyl products—a reaction known as the Baker–Venkataraman rearrangement—and outlines their subsequent transformations.
Ameen, Dana, Snape, Timothy James
core   +1 more source

3-(4-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 4-fluorobenzophenone by Claisen–Schmidt condensation. All the bond lengths and bond angles are in normal ranges.
Pu-Su Zhao   +3 more
doaj   +1 more source

Crystal structure of (2E)-1-(4-ethoxyphenyl)-3-(4-fluorophenyl)prop-2-en-1-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2022
The title molecule, C17H15FO2, was synthesized by a Claisen–Schmidt condensation with 4-fluorobenzaldehyde and 4′-ethoxyacetophenone. The torsion angles between the 4-fluorophenyl ring and the alkene and the 4′-ethoxyphenyl ring and the 2-propen-1-one ...
Merle Bernhard   +2 more
doaj   +1 more source

SYNTHESES AND ANTIOXIDANT ACTIVITIES OF SOME HYDROXY DIMETHOXY CHALCONE DERIVATIVES [PDF]

open access: yes, 2014
Four (4) hydroxy dimethoxy chalcones derivatives were synthesized by Claisen-Schmidt condensation of hydroxyacetophenone with 3,4-dimethoxybenzaldehyde using conventional method and grinding technique.
Elfi Susanti VH   +4 more
core   +2 more sources

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