Results 91 to 100 of about 8,721 (248)

Double‐Sided Control of Product Type Preference in the Visible‐Light Initiated Reaction of 1,3‐Dicarbonyl Compounds with Alkenes

Advanced Synthesis &Catalysis, Volume 367, Issue 10, May 20, 2025.
Abstract The demonstrated light‐initiated addition of radicals formed on an active methylene group to styrene derivatives exhibits a product selectivity influenced by the presence of a protic solvent. Under protic conditions, the predominant products are branched compounds with the alkene moiety attached to the methylene group.
Małgorzata Pałyga, Jan Rzepiela, Sebastian Baś   +2 more
wiley   +1 more source

Lipase-ultrasound assisted synthesis of polyesters [PDF]

, 2013
Poly (ethylene glutarate), poly (ethylene malonate) and poly (ethylene phthalate), were enzymatically synthesized by immobilized Candida antarctica lipase B in solvent free conditions.
Tomke, Prerana D., Zhao, Xiaoman, Chiplunkar, Pranali P., Xu, B., Wang, Hongbo, Silva, Carla, Rathod, Virendra K., Cavaco-Paulo, Artur   +7 more
core   +3 more sources

Chitosan‐Graft‐Gelatin Hydrogel Containing Bromothymol Blue as a Food Spoilage Indicator for Intelligent Food Packaging

Advanced Materials Interfaces, Volume 12, Issue 9, May 5, 2025.
A chitosan‐graft‐gelatin hydrogel, incorporating a pH‐responsive dye, bromothymol blue, as a colorimetric freshness indicator is introduced to monitor the spoilage of chicken breasts. The hydrogel indicates microbial activity, and the production of carbon dioxide due to deteriorating food freshness via a change in pH, and serves as a smart and visual ...
Bahareh Farasati Far, Mehdi Jahanbakhshi, Leila Jameie, Asefeh Shojaei, Kimia Zarei, Parsa Taromi, Shima Jafarzadeh, Yavuz Nuri Ertas   +7 more
wiley   +1 more source

Synthesis of Some New Barbituric and Thiobarbituric Acids Bearing 1,2,4-Triazine Moiety and Their Related Systems as Herbicidal Agents

Journal of Chemistry, 2019
In search for highly bioactive barbituric and thiobarbituric acid derivatives, some new barbituric and thiobarbituric acids bearing 1,2,4-triazine moiety and their related systems (5–13) have been obtained from the addition of isocyanate and ...
Abeer N. Al-Romaizan
doaj   +1 more source

Synthesis Methods and Therapeutic Journey of Carprofen and Its Derivatives: A Review

Chemical Biology &Drug Design, Volume 105, Issue 5, May 2025.
Although it is currently only used in veterinary therapy, carprofen proves to be a molecule with a versatile therapeutic potential for human pharmacotherapy. Moreover, the molecule is a target in the drug discovery process for the development of new bioactive compounds.
Carmen Limban, Diana Camelia Nuță, Miron Teodor Caproiu, Denisa Elena Dumitrescu, Șerban Iancu Papacocea, Alexandra Teodora Bordei, Florea Dumitrașcu   +6 more
wiley   +1 more source

Synthesis and pharmacological profiling of analogues of benzyl quinolone carboxylic acid (BQCA) as allosteric modulators of the M1 muscarinic receptor [PDF]

, 2013
Established therapy in Alzheimer’s disease involves potentiation of the endogenous orthosteric ligand, acetylcholine, at the M1 muscarinic receptors found in higher concentrations in the cortex and hippocampus.
Arthur Christopoulos, Aurelio L., Avlani V. A., Barbosa J., Bell R. P., Ben Capuano, Bunce R. A., Canals M., Cao X., Casara P., Celine Valant, Conn P. J., Decker M., Eaton P. E., Gould R. G., Holden M., Koguro K., Kuduk S. D., Kuduk S. D., Kuduk S. D., Kuduk S. D., Kuduk S. D., Kuduk S. D., Kuduk S. D., Kuduk S. D., Langmead C. J., Lauer W. M., Leach K., Ma L., Maffioli S. I., Meanwell N. A., Medeiros R. R., Patrick M. Sexton, Peter J. Scammells, Podányi B., Reid P. R., Shailesh N. Mistry, Shirey J. K., Wess J., Wise W. M., Yang F. V., Zewge D., Zhang Y., Škugor M. M.   +43 more
core   +2 more sources

1,6-Conjugate Additions of Carbon Nucleophiles to 2-[(1E,3E)-4-Arylbuta-1,3-dien-1-yl]-4H-chromen-4-ones [PDF]

, 2017
KGaA, Weinheim The 1,6-conjugate addition of nitromethane to 2-[(1E,3E)-4-arylbuta-1,3-dien-1-yl]-4H-chromen-4-ones was accomplished and led mainly to the corresponding β-(nitromethyl)chromones. (E)-5′-(Nitromethyl)-3′-styryl-[1,1′-biphenyl] -2-ol and 3′-
, Albuquerque, Albuquerque, Albuquerque, Ballini, Bernini, Cardona, Csákÿ, Esteves, Ferreira, Gaspar, Giardinetti, Grünenfelder, Gu, Guo, Hajra, Ibrahim, Kawai, Keri, Lee, Lippur, Liu, Liu, Matsuda, Mei, Nakashima, Oliva, Pinto, Pinto, Pinto, Prakash, Proença, Punyapreddiwar, Resende, Santos, Silva, Silva, Silva, Sousa, Sousa, Talhi, Vakulya, Yadav, Zhu   +43 more
core   +1 more source

GC-MS Analysis of Membrane-Graded Fulvic Acid and Its Activity on Promoting Wheat Seed Germination

Molecules, 2016
The chemical composition of fulvic acid (FA) with a molecular weight below 500 (FA-500) was analyzed, and its activity on promoting the seed germination of wheat was studied in this paper.
Yi Qin, Hui Zhu, Mi Zhang, Huifen Zhang, Cheng Xiang, Baocai Li   +5 more
doaj   +1 more source

Kinase Inhibitors of Novel Pyridopyrimidinone Candidates: Synthesis and In Vitro Anticancer Properties

Journal of Chemistry, 2019
A new class of pyridopyrimidinone compounds containing different nitrogenous heterocycles were synthesized starting from the key precursor 2-hydrazinyl-5-phenyl-7-(pyridin-3-yl)pyrido[2,3-d]pyrimidin-4(3H)-one via condensation with series of aromatic ...
Nagy M. Khalifa, Mohamed A. Al-Omar, Hamad M. Alkahtani, Ahmed H. Bakheit   +3 more
doaj   +1 more source

Iron-mediated Preparation of Vinylcyclopropanes. Scope, Mechanism, and Applications [PDF]

, 2003
The addition of stabilized carbon nucleophiles to tricarbonyl(1-methoxycarbonylpentadienyl)iron(1+) cation (1a) proceeds via attack at C2 on the face of the ligand opposite the Fe(CO)3 group to generate tricarbonyl(pentenediyl)iron complexes 2. Oxidation
Cao, Yeyu, Donaldson, William A., Godula, Kamil, Yun, Young K.   +3 more
core   +1 more source