Results 31 to 40 of about 1,361 (163)

Synthesis of new curcumin analogues from Claisen-Schmidt condensation

European Journal of Chemistry, 2013
A series of new curcumin analogues were obtained by Claisen-Schmidt condensation of substituted benzaldehydes with cyclohexanone derivatives using the ratio of 1:2 of ketone to aldehyde in dilute ethanolic solution under base catalyzed (NaOH) conditions at room temperature in good yields.
Nouara Ziani, Assia Sid, Albert Demonceau, Quentin Willem, Benjamin Dassonneville, Kaddour Lamara   +5 more
openaire   +1 more source

Synthesis and Identification of Phenyl Azochalcone & bis- azo – Chalcone Derivatives Derived from P-amino Acetophenone [PDF]

Kirkuk Journal of Science, 2018
This work involves the synthesis of different substituted amino-chalcones via claisen- schmidt condensation reaction between p-amino acetophenone and different aromatic substituted benzaldehydes. The second step involves the conversion of amino-chalcones
Zahraa Talib Ghlib, Ahmed Abdul-Hassan, Nihad Ismael Taha   +2 more
doaj   +1 more source

(E)-3-[4-(1H-Imidazol-1-yl)phenyl]-1-(3-chloro-4-fluorophenyl)prop-2-en-1-one

Molbank, 2022
Imidazole-containing chalcones have been shown to be effective against Aspergillus fumigatus, the pathogenic agent for pulmonary aspergillosis. Claisen-Schmidt condensation of 4-(1H-imidazol-1-yl)benzaldehyde with 3′-chloro-4′-fluoroacetophenone using ...
Reina Takaki, Bradley O. Ashburn
doaj   +1 more source

Synthesis and Characterization of Novel Heterocyclic Chalcones from 1-Phenyl-1H-pyrazol-3-ol

Molecules, 2022
An efficient synthetic route to construct diverse pyrazole-based chalcones from 1-phenyl-1H-pyrazol-3-ols bearing a formyl or acetyl group on the C4 position of pyrazole ring, employing a base-catalysed Claisen–Schmidt condensation reaction, is described.
Arminas Urbonavičius, Graziana Fortunato, Emilija Ambrazaitytė, Elena Plytninkienė, Aurimas Bieliauskas, Vaida Milišiūnaitė, Renzo Luisi, Eglė Arbačiauskienė, Sonata Krikštolaitytė, Algirdas Šačkus   +9 more
doaj   +1 more source

Synthesis and Spectroscopic Investigation of Some New Chalcones and their transformation to pyrazoline derivatives [PDF]

Kirkuk Journal of Science, 2012
A series of a new chalcone derivatives (2a-i) containing benzyloxy moiety have been synthesized on the basis of base catalyzed claisen –Schmidt condensation in high yields from the reaction of the prepared starting material 3-(4-cholrobenzyloxy ...
Shakhawan A. Omer, Muhamad S. Ahmad, Farouq E. Hawaiz   +2 more
doaj   +1 more source

(2<em>E</em>)-3-[4-(1<em>H</em>-Benzimidazol-2-ylmethoxy)-3-methoxyphenyl]-1-(4,4''-difluoro-5'-methoxy-1,1':3',1''-terphenyl-4'-yl)prop-2-en-1-one

Molbank, 2012
Novel terphenyl chalcone containing benzimidazole moiety (<strong>3</strong>) is synthesized by the base-catalyzed Claisen–Schmidt condensation of acetyl terphenyl derivative (<strong>1</strong>) with 4-(1<em>H</em> ...
Balladka Kunhanna Sarojini, Rajagopalan Srinivasan, Divya N. Shetty, Badiadka Narayana, Seranthimata Samshuddin   +4 more
doaj   +1 more source

(E)-2-(3,5-Dimethoxybenzylidene)indan-1-one

IUCrData, 2020
The title chalcone, C18H16O3, was prepared by a solventless base-promoted Claisen–Schmidt condensation and, upon recrystallization from ethanol, obtained in 56% yield. The dihedral angle between the indanone ring system and the benzene ring is 2.54 (4) °
Elvia Encarnacion-Thomas, Roger D. Sommer, Ajay Mallia, Joseph Sloop   +3 more
doaj   +1 more source

An Advanced Approach for MgZnAl-LDH Catalysts Synthesis Used in Claisen-Schmidt Condensation

Catalysts, 2022
Using organic-base tetramethylammonium hydroxide (TMAH) is a viable, cheap, and fast option for the synthesis of MgZnAl-LDH-type materials by both co-precipitation and mechano-chemical methods. TMAH presents several advantages, such as the smaller quantity of water required in the washing step compared to the use of inorganic alkalis, the prevention of
Rodica Zăvoianu, Silvana-Denisa Mihăilă, Bogdan Cojocaru, Mădălina Tudorache, Vasile I. Pârvulescu, Octavian Dumitru Pavel, Solon Oikonomopoulos, Elisabeth Egholm Jacobsen   +7 more
openaire   +1 more source

Synthesis and Antimicrobial Activity of Some Chalcone Derivatives

E-Journal of Chemistry, 2008
In an effort to develop antimicrobial agents, a series of chalcones were prepared by Claisen-Schmidt condensation of appropriate acetophenones with appropriate aromatic aldehydes in the presence of aqueous solution of potassium hydroxide and ethanol at ...
Y. Rajendra Prasad, A. Lakshmana Rao, R. Rambabu   +2 more
doaj   +1 more source

Layered double hydroxides as precursors for catalysts in Claisen-Schmidt condensation

Review of the Bulgarian Geological Society, 2022
MMgAlO and MAlO mixed oxides (where M = Cu, Co, Zn and Ni) were obtained by thermal decomposition of the corresponding layered double hydroxides (LDH) precursors and used as catalysts for Claisen-Schmidt condensation of 2’-hydroxyacetophenone and benzaldehyde under solvent-free conditions.
openaire   +1 more source