Concept

Aldéhyde

Publications associées (131)

Developing Reactions of Strained Rings

Carbo- and heterocyclic structures containing nitrogen-substituted stereocenters are recurrent structural motifs in natural and bioactive compounds, therefore constituting a privileged class of synthetic targets. In this regard, substituted three- and four ...

EPFL2018

Ozonation of Para-Substituted Phenolic Compounds Yields p-Benzoquinones, Other Cyclic α,β-Unsaturated Ketones, and Substituted Catechols

Urs von Gunten, Peter Rudolf Tentscher

Phenolic moieties are common functional groups in organic micropollutants and in dissolved organic matter, and are exposed to ozone during drinking water and wastewater ozonation. Although unsubstituted phenol is known to yield potentially genotoxic p-benz ...

2018

Organocatalytic Enantioselective Acyloin Rearrangement of α-Hydroxy Acetals to α-Alkoxy Ketones

Qian Wang, Jieping Zhu, Hua Wu

We report an unprecedented organocatalytic enantioselective acyloin rearrangement of alpha,alpha-disubstituted alpha-hydroxy acetals. In the presence of a catalytic amount of chiral binol-derived N-triflyl phosphoramide, alpha-hydroxy acetals rearranged to ...

Wiley-Blackwell2017

Synthesis of Vinyl Isocyanides and Development of a Convertible Isonitrile

Qian Wang, Jieping Zhu, Martina Spallarossa

The reaction of isocyanomethylenetriphenylphosphorane, generated in situ from the corresponding phosphonium salt, with a diverse set of aldehydes afforded vinyl isocyanides in good to high yields. Excellent E-selectivity was observed for aliphatic aldehyde ...

American Chemical Society2016

One-Pot Three-Component Synthesis of Vicinal Diamines via In Situ Aminal Formation and Carboamination

Jérôme Waser, Ugo Jonathan Orcel

A synthesis of vicinal diamines via in situ aminal formation and carboamination of allyl amines is reported. Employing highly electron-poor trifluoromethyl aldimines in their stable hemiaminal form was key to enable both a fast and complete aminal formatio ...

2016

Efficiency of SPIONs functionalized with polyethylene glycol bis (amine) for heavy metal removal

Heinrich Hofmann, Yongyuth Wanna

Hybrid magnetic nanoparticles based on poly(methylmethacrylate) (PMMA) and super-paramagnetic iron oxide nanopaticles (SPIONs) with selective surface modification has been developed for heavy metal removal by applying external magnetic fields. The nanopart ...

Elsevier2016

Atomic-level organization of vicinal acid-base pairs through the chemisorption of aniline and derivatives onto mesoporous SBA15

David Lyndon Emsley, David Benjamin Roger Antoine Gajan

The design of novel heterogeneous catalysts with multiple adjacent functionalities is of high interest to heterogeneous catalysis. Herein, we report a method to obtain a majority of bifunctional acid-base pairs on SBA15. Aniline reacts with SBA15 by openin ...

Royal Soc Chemistry2016

Selectivity Control in Palladium-Catalyzed Alcohol Oxidation through Selective Blocking of Active Sites

Davide Ferri, Oliver Kröcher, Di Wang

Stabilized metal nanoparticles (NPs) have received wide interest in a number of liquid-phase catalytic transformations, but the role of the capping/protective agent is still debated. Operando attenuated total reflection infrared (ATR-IR) spectroscopy enabl ...

American Chemical Society2016

Mechanochemically Responsive Surfaces and Soft Tissue Adhesive Interfaces Generated via Controlled Radical Polymerization

Nariye Cavusoglu Ataman

Thin coatings applied to surfaces dramatically improve the properties of materials. Thus, they have found application in a broad variety of areas including biomedicine, nanotechnology, bioelectronics and optics, amongst others. Polymer brushes prepared via ...

EPFL2016

[4+2]-Annulations of Aminocyclobutanes

Jérôme Waser, Florian Patrick Marie Daniel De la Barre De Nanteuil, Jérémy Vuilleumier, Sophie Lucie Racine, Daniele Perrotta

The first [4 + 2]-annulation between aminocyclobutanes and aldehydes to access tetrahydropyranyl amines is reported. With phthalimido cyclobutane dicarboxylates and aromatic aldehydes, tetrahydropyrans were obtained in 53-92% yield and 3:1-17:1 dr using sc ...

American Chemical Society2015

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