Results 71 to 80 of about 28,125 (246)

Supramolecular Chemistry in Metal–Organic Framework Materials

Advanced Materials, EarlyView.
This review highlights synergies between reticular chemistry and supramolecular chemistry. The role of supramolecular interactions in determining framework…guest interactions and attempts to understand dynamic behavior in metal–organic frameworks (MOFs), particularly emphasizing the development of crystal sponges, studying reactions in frameworks and ...
Eugenia Miguel‐Casañ, Georgia R. F. Orton, Danielle E. Schier, Neil R. Champness   +3 more
wiley   +1 more source

ChemInform Abstract: Studies on 1,3‐Dipolar Cycloadditions

ChemInform, 2002
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.
openaire   +2 more sources

Elucidating the Trends in Reactivity of Aza-1,3-Dipolar Cycloadditions

Annalen der Pharmacie, 2018
This report describes a density functional theory investigation into the reactivities of a series of aza-1,3-dipoles with ethylene at the BP86/TZ2P level.
Trevor A. Hamlin, D. Svatunek, Song Yu, L. Ridder, I. Infante, L. Visscher, F. Bickelhaupt   +6 more
semanticscholar   +1 more source

Redrawing the Mannich‐Type Reaction through Carbonyl Umpolung Reactivity

Advanced Synthesis &Catalysis, EarlyView.
GA: Herein, a conceptually novel one‐pot multicomponent strategy is reported for the streamlined construction of five‐membered imidazolidines from 1,2‐diaza‐1,3‐dienes (onefold), amines (twofold), and formaldehyde (twofold). This redesigned Mannich‐type reaction that exploits a carbene‐like activity of 1,2‐diaza‐1,3‐dienes (realized by “umpolung ...
Vittorio Ciccone, Sara Caselli, Giacomo Mari, Fabio Mantellini, Gianfranco Favi   +4 more
wiley   +1 more source

The Huisgen Reaction: Milestones of the 1,3‐Dipolar Cycloaddition

Angewandte Chemie International Edition, 2020
AbstractThe concept of 1,3‐dipolar cycloadditions was presented by Rolf Huisgen 60 years ago. Previously unknown reactive intermediates, for example azomethine ylides, were introduced to organic chemistry and the (3+2) cycloadditions of 1,3‐dipoles to multiple‐bond systems (Huisgen reaction) developed into one of the most versatile synthetic methods in
Martin Breugst, Hans‐Ulrich Reissig
openaire   +4 more sources

Cycloadditions in mixed aqueous solvents: the role of the water concentration [PDF]

, 2005
We examined the kinetics of a series of cycloaddition reactions in mixtures of water with methanol, acetonitrile and poly(ethylene glycol) (MW 1000). The reactions include the Diels–Alder (DA) reaction between cyclopentadiene and N-n-butylmaleimide or ...
Abraham, Abraham, Adjei, Alsehaibani, Asaad, Baozue, Biswas, Biswas, Bradsher, Breon, Brisset, Bustamante, Cargill, Cargill, Cativiela, Cativiela, Cativiela, Cativiela, Chaterjee, Cox, Cox, Das, Datta, Desimoni, Desimoni, Dubbs, Dutta, Escalera, Gajewski, Ganguly, Gharmaleki, Hefter, Huisgen, Huot, Kim, Kumar, Lara, Li, Li, Li, Lizhuang, Lizhuang, Lizhuang, Maitra, Manzo, Marcus, Martin, Meijer, Otto, Otto, Paruta, Pramanik, Rideout, Rispens, Rispens, Rispens, Romero, Sangwan, Shehatta, Shehatta, Shehatta, Stephen, Turner, Turro, Valsaraj, Wijnen, Yilin   +66 more
core   +3 more sources

A sequential multistep process for the fully mechanochemical, one-pot synthesis of the antiepileptic drug rufinamide

Green Chemistry Letters and Reviews, 2022
Mechanochemistry is a powerful tool to develop environmentally benign syntheses of active pharmaceutical ingredients. In this context, we report here the synthesis of the anti-epileptic agent rufinamide through a one-pot sequential multi-component ...
Jorge Gómez-Carpintero, Clara Cabrero, Juan Domingo Sánchez, Juan Francisco González, José Carlos Menéndez   +4 more
doaj   +1 more source

Recent Advances in Ene Reactions with Carbon Enophiles

Advanced Synthesis &Catalysis, EarlyView.
Recent advances in the classical intra‐ and intermolecular ene nexus with carbon enophiles (alkenes, alkynes, arynes, and allenes) show a considerable increase in structural complexity and an enormous potential for functional applications in polymer science.
Thomas J. J. Müller
wiley   +1 more source

Bioorthogonal metal-free click-ligation of cRGD-pentapeptide to alginate [PDF]

, 2012
Click reactions have become very common and powerful ligation techniques, of which 1,3-dipolar cycloadditions have most frequently been employed. Since metal-mediated cycloadditions are incompatible in biomedical applications due to toxicity issues ...
Dräger, Gerald, Kirschning, Andreas, Krause, Andreas   +2 more
core   +2 more sources

(SP,SP)-(–)-(E)-1,2-Bis(methylphenylphosphinoyl)ethene

Acta Crystallographica Section E, 2009
The title compound, C16H18O2P2, possesses two stereogenic P atoms and shows a distorted s–cis conformation of each O=P—C=C moiety. This has been suggested on the basis of the stereochemical result of 1,3-dipolar cycloadditions with ...
doaj   +1 more source