Results 51 to 60 of about 672 (165)

Boronate‐Type‐Controlled Regioselective Catalytic [2 + 2 + 2] Cyclotrimerization for Synthesis of Polysubstituted 2‐ and 3‐Borylated Pyridines

ChemistryEurope, Volume 3, Issue 6, November 11, 2025.
Ring the boron, not the bell: cyclotrimerization of borylated diynes with nitriles using Co and Ru catalysts allows the efficient synthesis of a wide variety of borylated pyridines with high regioselectivity, paving the way for multiple post‐functionalizations.
Eva Bednářová, David Nečas, Rahamdil Usman, Anagha K. Satheeshkumar, Róbert Gyepes, Ivana Císařová, Marko Hapke, Martin Kotora   +7 more
wiley   +1 more source

POLYFUNCTIONALITY OF THE TERM IN MODERN TERMINOLOGY

MESSENGER of Kyiv National Linguistic University. Series Philology, 2022
In the present paper, we characterize a term as a multifunctional phenomenon and define the system of its functions that is quite complicated, and even more complex than the corresponding system of a non-term (commonly used word). For instance, any term performs the sign function.
openaire   +2 more sources

Preparation of Enantioenriched Spirocyclic Scaffolds Transferring Axial Chirality from Borylalkylidenecycloalkanes

ChemistryEurope, Volume 3, Issue 6, November 11, 2025.
Enantiomerically enriched borylalkylidenecycloalkanes can transfer axial chirality to spirocyclic compounds with central chirality, without erosion of enantiomeric ratio. The method involves cyclopropanation, borylcyclopropanation, epoxidation, and aziridination reactions, that proceed in astereodivergent manner giving access to spirocycles with ...
Nerea Iragorri, Josebe Hurtado, Jose L. Vicario, Efraím Reyes, Elena Fernández   +4 more
wiley   +1 more source

Light Mediated Sulfonylation/C–H Activation/Annulation of Benzimidazoles Derivatives Catalyzed by Diarylmethylium Tetrafluoroborate Salts: An Experimental and Computational Study

Advanced Synthesis &Catalysis, Volume 367, Issue 20, October 29, 2025.
Through the exploiting of visible‐light, a key photoactive complex, and an acid‐catalyzed proton‐coupled electron transfer, polycyclic sulfonylated benzimidazoles are obtained through a domino process including sulfonylation, C–H activation, and annulation. Diarylmethylium tetrafluoroborates are employed as inexpensive organocatalyst capable of forming
Polyssena Renzi, Davide Cerrina, Emanuele Azzi, Giovanni Ghigo, Annamaria Deagostino   +4 more
wiley   +1 more source

Anti-Inflammatory Properties of Dendrimers per se

The Scientific World Journal, 2011
Dendrimers are polybranched and polyfunctionalized tree-like polymers. Unlike linear polymers, they have perfectly defined structure and molecular weight, due to their iterative step-by-step synthesis.
Myriam Hayder, Séverine Fruchon, Jean-Jacques Fournié, Mary Poupot, Rémy Poupot   +4 more
doaj   +1 more source

MW-Assisted Synthesis of Eight New 6-Nitrilmethyl Pyrrolo[3,4-b]pyridin-5-Ones via a Domino Process: aza Diels–Alder/N-Acylation/Aromatization

Proceedings, 2019
An efficient Microwave (MW)-assisted synthesis of eight new 6-nitrilmethyl-pyrrolo[3,4-b]pyridin-5-ones via a domino process: aza Diels–Alder/N-acylation/aromatization (dehydration–decarboxylation) from their corresponding 2-aminonitrile ...
Manuel A. Rentería-Gómez, Shrikant G. Pharande, Alejandro Islas-Jácome, Eduardo González-Zamora, Rocío Gámez-Montaño   +4 more
doaj   +1 more source

A Post-Synthetic Modification Approach to Expand MIL-101-NH₂ Functionalization

Chemistry
Considering the importance of organic functionalization of MOFs, we here report a simple, tunable and efficient one-step post-modification procedure for introducing amino and carboxylic groups into the mesoporous metal–organic framework Al- and Cr-MIL ...
Alain Vigroux, Christian Lherbet, Isabelle Fabing, Marie-Claire Barthélémy, Christophe Laurent, Pascal Hoffmann   +5 more
doaj   +1 more source

Green and multi-component synthesis of polyfunctionalized pyrrole derivatives under solvent-free condition [PDF]

شیمی کاربردی روز
In the present research, the design and synthesis of polyfunctionalized pyrrole derivatives using one-pot, multi-component reactions including aromatic aldehydes, ethyl acetoacetate, thiadiazole derivatives, and nitromethane in the presence of 3-sulfonic
Behjat Pouramiri
doaj   +1 more source

Systemic polyfunctionality and morphology–syntax interdependencies

, 2017
Abstract The chapter examines classes of grammatical markers that can serve more than one function, polyfunctional markers, spoiling the one-to-one form and function relation which is what morphology tends to do. There are areas of the grammar more prone to this behaviour suggesting that there may be at work principles of morphological ...
Ackerman, Farrell, Bonami, Olivier
openaire   +3 more sources

POLYFUNCTIONALITY OF ENGLISH QUANTITATIVE WORDS

GISAP:Philological Sciences, 2015
The article in question considers the functioning of quantitative units, their language and speech aspects. The iIntroduction is focused on the most significant items of the reports – definition of numerals, words of weight and measure, aims, methods of investigation, empiric materials applied, evolution modifications and perspectives of further study.
Olha Shumenko, Svitlana Shvachko, Evgeniy Kuprienko   +2 more
openaire   +1 more source