Article
Chemistry, Physical
Wenlin He, David S. Potts, Zhongyao Zhang, Bowei Liu, Robson L. Schuarca, Son-Jong Hwang, Jesse Q. Bond, David W. Flaherty, Viktor J. Cybulskis
Summary: The reactivity of tetravalent framework Lewis acid sites (Ti, Zr, Sn, Hf) in hydrophobic beta zeolites (M-*BEA) was assessed using a model aldol reaction. The results showed that Zr and Hf are more effective Lewis acids, while propanal self-condensation has a higher rate.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Applied
Duraipandi Devi Priya, Selvaraj Mohana Roopan
Summary: A novel, flexible and strong technique for the synthesis of indazolo[3,2-b]quinazoline motifs using NiTiO3 as a catalyst was reported. The reaction pathway involved Claisen-Schmidt condensation, Michael reaction, and oxidation for three-component domino convention. The synthesized compounds exhibited fluorescent properties and high fluorescence quantum yields.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Review
Biochemistry & Molecular Biology
Nicolas Giacoletto, Frederic Dumur
Summary: Over the past several decades, photopolymerization research has been actively developing, with bis-chalcones found to be promising photosensitizers for different polymerization reactions. This review provides an overview of the various bis-chalcones reported to date and their applications in different fields.
Article
Biochemistry & Molecular Biology
Emilia P. T. Leitao, Osvaldo S. Ascenso, Tania Santos de Almeida, Ignacio Gonzalez, Inmaculada Hernandez, Jose Quintana, Francisco Estevez, Patricia Rijo
Summary: A series of hydroxylated chalcone derivatives with different substitution patterns were prepared, and it was found that the naphthylchalcone containing a methoxy group in position 6 ' of the A ring exhibited the highest cytotoxicity against human leukaemia cells.
BIOORGANIC CHEMISTRY
(2021)
Article
Chemistry, Applied
Min Huang, Manman Sun, Lanxin Zhang, Xuebo Yang, Yuntao Shi, Kun Xing, Hongguang Deng, Zhenwei Zhang, Dan Liu, Linxiang Zhao
Summary: This article presents an efficient new synthesis method for a peroxisome proliferator-activated receptor delta agonist fonadelpar. The method utilizes Claisen-Schmidt condensation and an optimized process to prepare the drug candidate with fewer steps and higher yield.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2022)
Review
Chemistry, Medicinal
Rui Pereira, Artur M. S. Silva, Daniela Ribeiro, Vera L. M. Silva, Eduarda Fernandes
Summary: This review article provides an overview of the chemical structure, chemical properties, and synthesis methods of bis-chalcones. It also emphasizes the anti-inflammatory activity of bis-chalcones and their mechanisms of action.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Gheorghita Mitran, Tam Le Phuong Nguyen, Dong-Kyun Seo
Summary: In this study, CoAl2O4 samples were synthesized using sol-gel method with different complexing agents. The presence of oxalic acid as a complexation agent favors the expansion of Co3O4 phase. In the presence of citric acid as a complexing agent, CoAl2O4 is the dominant phase. The catalytic performances of CoAl2O4 spinel oxides were evaluated and showed good relationship with the Co3+/Co2+ ratio, reactants conversion, and products yield.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Rodica Zavoianu, Madalina Tudorache, Vasile I. Parvulescu, Bogdan Cojocaru, Octavian D. Pavel
Summary: A rapid, cheap and feasible new approach using tetramethylammonium hydroxide (TMAH) as a nontraditional hydrolysis agent was successfully applied to synthesize Mg0.375Fe0.375Al0.25-LDH through mechano-chemical and co-precipitation methods. This method has advantages in terms of fewer steps, lower energy involvement, and elimination of alkaline cation contamination. The basicity of the catalysts was found to have a linear dependence on their catalytic activity in Claisen-Schmidt condensation, and the presence of these catalysts inhibited the oxidation of benzaldehyde.
Article
Chemistry, Physical
Swayamsiddha Kar, Prashant Rai, Sai Manohar Chelli, Abdul Akhir, Naveen Shivalingegowda, Sidharth Chopra, Lokanath Neratur Krishnappagowda, Siva Kumar Belliraj, Nageswara Rao Golakoti
Summary: The unexpected spiro cyclic products were obtained from the alkali-catalyzed Claisen-Schmidt reaction of ketones with salicylaldehyde, in addition to the bis-chalcones. Under acid catalysis, the spiro products transformed into benzopyrylium salts. The study characterized the products obtained from cyclopentanone, cylcohexanone, and cylcoheptanone using various analytical techniques, and investigated the thermal properties of the spiro molecule synthesized from cylcoheptanone reactant. The impact of solvents, Lewis acid catalyst, and thermodynamic parameters like entropy were explored to rationalize the phenomenon, as well as the relationship between the bis-chalcone, spiro molecule, and benzopyrylium salt, with the investigation of ring expansion from cyclopentanone to cycloheptanone. The antibacterial potential of the synthesized spirobibenzopyrans and benzopyrylium salts was also presented.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Hsin Yen Tsai, Yu-Tzu Huang, Cing-Ling Kuo, Chia-Jou Kuo, Anren Hu, Jih-Jung Chen, Tzenge-Lien Shih
Summary: This study discussed the synthesis of flavones from chalcones via iodine-mediated cyclization, and the unusual ring oxidative cyclization from C-2-OH-chalcones under the same condition. Different results were found and the mechanisms were discussed in detail.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2021)
Article
Chemistry, Applied
Tao Jiang, Fumin Wang, Xubin Zhang, Yi Zhai, Guojun Lv, Yu Shen, Yuzhou Wu
Summary: In this study, controlled synthesis of ZSM-5 mesocrystals was achieved without special additives, utilizing selected area electron diffraction and fast Fourier transform to demonstrate the well oriented feature of synthesized zeolites. The crystallization process was further analyzed, with oriented particle attachment identified as an effective mechanism guiding the synthesis of mesocrystals. Superior catalytic performance was demonstrated in aldol condensation reactions, with 93% conversion obtained between benzaldehyde and 2-hydroxyacetophenone.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Laurene Minsat, Cedric Peyrot, Fanny Brunissen, Jean-Hugues Renault, Florent Allais
Summary: A series of phloretin analogs were synthesized through a green method, showing potential higher activity than phloretin itself, with some molecules demonstrating lower EC50 values than phloretin.
Article
Biochemistry & Molecular Biology
Miraj Fatima, Samina Aslam, Ansa Madeeha Zafar, Ali Irfan, Misbahul Ain Khan, Muhammad Ashraf, Shah Faisal, Sobia Noreen, Gamal A. Shazly, Bakht Ramin Shah, Yousef A. Bin Jardan
Summary: This research focuses on the synthesis of furan chalcone compounds and their potential for inhibiting bacterial urease enzyme. The results show that these compounds exhibit promising urease inhibition activity, with 1-phenyl-3-[5-(2,5-dichlorophenyl)-2-furyl]-2-propen-1-one and 1-phenyl-3-[5-(2'-chlorophenyl)-2-furyl] -2-propen-1-one displaying the highest activity.
Article
Chemistry, Applied
Sagnik Mukherjee, Manpreet Singh, Ankita Ravani, Amit Parekh, Atindra Shukla, Sunil Chaki, Subhadip Neogi, Manish Kumar Mishra
Summary: The NH2-MIL-125, an amine functionalized metal-organic framework, showed significant catalytic activity for the base catalyzed Claisen-Schmidt condensation reaction. By modifying NH2-MIL-125 with guanidyl groups, the catalytic activity was further enhanced.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Elmira Khusnutdinova, Anastasiya Petrova, Zulfia Zileeva, Ulyana Kuzmina, Liana Zainullina, Yulia Vakhitova, Denis Babkov, Oxana Kazakova
Summary: A series of A-ring modified oleanolic and ursolic acid derivatives were synthesized and screened for cytotoxic activity against cancer cell lines. Some derivatives showed potent and selective cytotoxic activities, suggesting potential for anti-cancer therapy.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
