Results 111 to 120 of about 1,361 (163)

Advances in synthetic strategies for two-dimensional conjugated polymers.

Org Chem Front
Zhao R, Liu G, Koko PL, Wang M, Feng X.
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Claisen–Schmidt condensation catalysis by natural phosphate

Applied Catalysis A: General, 2001
Abstract The Claisen–Schmidt condensation is easily carried out with or without a solvent in the presence of natural phosphate (NP) alone, activated by water, benzyltriethylammonium chloride and both. The role of water and ammonium salt are clearly shown.
Saı̈d Sebti, Ahmed Saber, Abdallah Rhihil, Rachid Nazih, Rachid Tahir   +4 more
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Activated carbons for chalcone production: Claisen-Schmidt condensation reaction

Chemical Engineering Journal, 2016
Abstract Activated carbons catalysts from different raw materials as Orbignya phalerata , Cocus nucifera , ox bone and Elaies guineensis were tested on Claisen-Schmidt condensation reaction to obtain chalcone. The activated carbons were used in both forms, raw and treated with NaOH and were characterized by scanning electron microscopy ...
Caroline Winter, Jéssika Nunes Caetano, Anderson Barros Caixeta Araújo, Andréa Rodrigues Chaves, Indianara Conceição Ostroski, Boniek Gontijo Vaz, Caridad Noda Pérez, Christian Gonçalves Alonso   +7 more
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Claisen‐Schmidt Condensation using Green Catalytic Processes: A Critical Review

ChemistrySelect, 2020
Abstract Claisen‐Schmidt condensation have historical significance for over140 years and the scope was expanded due to the realization that chalcones so synthesized possess biological activity. The principles of green chemistry with emphasis on use of different solid catalysts with proper distribution of active centers such as acid ...
Ganapati D. Yadav, Dipti P. Wagh
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Claisen‐Schmidt Condensation and Domino Claisen‐Schmidt Condensation ‐ Michael Addition of 16‐Formyl Steroids in the Presence of Switchable Polarity Solvents

ChemistrySelect, 2021
Abstract Switchable polarity solvents (reversible ionic liquids) have been used to replace conventional catalysts and solvents in Claisen‐Schmidt condensation reactions of 16‐formyl steroids and aromatic ketones. The primarily formed α,β‐unsaturated ketones may undergo a Michael addition with the aromatic ketone reaction partner.
Dávid Ispán, Bence Varga, Szabolcs Balogh, Balázs Zsirka, Ágnes Gömöry, Rita Skoda‐Földes   +5 more
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Alkylacylimidazoles in Claisen–Schmidt and Knoevenagel Condensations

Russian Journal of Organic Chemistry, 2020
Alkylacylimidazoles were shown to be good reagents for Claisen–Schmidt and Knoevenagel-like condensations. The Claisen–Schmidt condensation of N-acetylimidazole with benzaldehyde followed by acidification with HCl gave cinnamic acid. The Knoevenagel-like condensation of N-(acetoacetyl)imidazole with hydrated aldehydes resulted in a fast and efficient ...
H. Quan, L. Wang, Zh. Wang, X. Mei, J. Ning, D. She   +5 more
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ChemInform Abstract: Claisen‐Schmidt Condensation in Aprotic Solvents.

ChemInform, 1995
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
V. M. KAZANTSEVA, S. P. KORSHUNOV
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Claisen–Schmidt Condensation Catalyzed by Metal‐Organic Frameworks

Advanced Synthesis & Catalysis, 2010
AbstractMetal‐organic framework [Fe(BTC) (BTC=1,3,5‐benzenetricarboxylic acid)] is a convenient heterogeneous catalyst for the carbon‐carbon bond forming reaction in toluene between acetophenone and benzaldehyde to give selectively chalcone in high yield.
Amarajothi Dhakshinamoorthy, Mercedes Alvaro, Hermenegildo Garcia   +2 more
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