Results 61 to 70 of about 27,886 (261)

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

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   +3 more sources

Synthesis of Chromen[4,3-b]pyrrolidines by Intramolecular 1,3-Dipolar Cycloadditions of Azomethine Ylides: An Experimental and Computational Assessment of the Origin of Stereocontrol [PDF]

, 2015
Azomethine ylides, generated from imine-derived O-cinnamyl or O-crotonyl salicylaldeyde and α-amino acids, undergo intramolecular 1,3-dipolar cycloaddition, leading to chromene[4,3-b]pyrrolidines.
Arrieta, Ana, Barcellos, Julio C.F., Cossío Mora, Fernando Pedro, Cossío, Unai, Costa, Paulo R.R., Cózar Ruano, Abel de, Dias, Ayres G., Nájera, Carmen, Sansano, Jose M.   +8 more
core   +2 more sources

Enantioselective Cycloaddition Reactions Catalyzed by BINOL-Derived Phosphoric Acids and N-Triflyl Phosphoramides: Recent Advances

Molecules, 2015
Over the last several years there has been a huge increase in the development and applications of new efficient organocatalysts for enantioselective pericyclic reactions, which represent one of the most powerful types of organic transformations.
Felix E. Held, Dominik Grau, Svetlana B. Tsogoeva   +2 more
doaj   +1 more source

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

Functionalized Antifouling Polymer Brushes for Biospecific Surfaces

Advanced Materials Interfaces, EarlyView.
Modern biosensors offer high sensitivity but often struggle with long‐term stability and selectivity for specific targets. Antifouling polymer brushes help enhance both stability and selectivity. In this review, we compare recent antifouling coatings, their design parameters, and how they are integrated with biorecognition elements for improved ...
Erik J. Postma, Luc Scheres, Sissi de Beer, Andriy R. Kuzmyn, Han Zuilhof   +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

Coinage Metal Complexes as Chiral Catalysts for 1,3-Dipolar Cycloadditions [PDF]

, 2014
In this account, we describe the experience of our research group in the implementation of chiral coinage metal complexes into the efficient enantioselective 1,3-DC of azomethine ylides derived from α-amino acids and azlactones with different ...
Nájera, Carmen, Sansano, Jose M.
core   +2 more sources

Water‐Catalytic Deconstructive and Proton Transfer Cyclopropanation of Sulfoxonium Ylide with Olefin

Advanced Science, EarlyView.
Water‐catalytic deconstructive and proton transfer cyclopropanation of sulfoxonium ylide with olefin is developed through a sequential water‐mediated ring‐closing/opening reaction. This atom‐economical, environmentally friendly methodology offers easy access to a range of cyclopropyl ketones with moderate to good yields.
Xianglin Yu, Liuting Huang, Haiyue Yang, Lijuan Song, Yi Jin   +4 more
wiley   +1 more source