Concept

Asymétrie des molécules biologiques

Publications associées (82)

Chiral Cp-Rhodium(III)-Catalyzed Asymmetric Hydroarylations of 1,1-Disubstituted Alkenes

Nicolai Cramer, Baihua Ye, Pavel Alexandrovich Donets

Metal-catalyzed functionalizations at the ortho position of a directing group have become an efficient bond-forming strategy. A wide range of transformations that employ Cp*Rh-III catalysts have been described, but despite their synthetic potential, enanti ...

Wiley-V C H Verlag Gmbh2014

Enantioselective Synthesis of Polycyclic Carbocycles via an Alkynylation-Allylation-Cyclization Strategy

Jérôme Waser, Pascal Miéville, Maria Victoria Vita

A new general three-stage strategy to access polycyclic ring systems bearing all-carbon quaternary centers with high enantioselectivity is reported. The required starting materials were readily accessed in racemic form through the alpha-alkynylation of ket ...

American Chemical Society2014

Giant spin splitting of the two-dimensional electron gas at the surface of SrTiO3

Jan Hugo Dil

Two-dimensional electron gases (2DEGs) forming at the interfaces of transition metal oxides(1-3) exhibit a range of properties, including tunable insulator-superconductor-metal transitions(4-6), large magnetoresistance(7), coexisting ferromagnetism and sup ...

Nature Publishing Group2014

Ruthenium(II) arene PTA (RAPTA) complexes: impact of enantiomerically pure arene ligands

Paul Joseph Dyson, Catherine Marie Amélie Clavel, Kelly Joan Kilpin, Shona Cammack

Organometallic ruthenium(II) arene complexes containing the PTA ligand ([Ru(eta(6)-arene)Cl-2(PTA)], PTA = 1,3,5-triaza-7-phosphatricyclo-[3.3.1.1] decane, termed RAPTA) show pharmacologically relevant antitumour properties in vitro. Two new enantiomeric p ...

Royal Society of Chemistry2013

Allenes in Molecular Materials

Pablo Rivera Fuentes

A review. This Minireview provides a crit. account of the development of allene-contg. advanced functional materials, starting with the design and synthesis of stable and enantiopure building blocks. A variety of systems, including shape-persistent macrocy ...

2012

Total Asymmetric Syntheses of beta-Hydroxy-delta-lactones via Umpolung with Sulfur Dioxide

Pierre Vogel, Maris Turks, Sylvain Claude Laclef, Claudia Jana Exner, Florent Poli

Cyclic stereotriads and stereotetrads of the beta-hydroxy-delta-lactone type, e.g. prelactones B and E, common in polyketides and polypropionates, are prepared via SO2-induced oxyallylations of enoxysilanes with (1E,3Z)-1-(1-phenylethoxy)penta-1,3-dien-3-y ...

2011

Asymmetric Phase-Transfer-Catalyzed Intramolecular N-Alkylation of Indoles and Pyrroles: A Combined Experimental and Theoretical Investigation

Marco Stenta

Asymmetric phase-transfer catalysis (PTC) has risen to prominence over the last decade as a straightforward synthetic methodology for the preparation of pharmacologically active compounds in enantiomerically pure form. However, the complex interplay of wea ...

Wiley-Blackwell2010

Regioselectivity in Tether-Directed Remote Functionalization - The Addition of a Cyclotriveratrylene-Based Trimalonate to C60 Revisited

Pablo Rivera Fuentes

The Bingel addn. of a trimalonate derived from a chiral, cyclotriveratrylene (CTV)-based tripodal tether to C60 was reinvestigated. The present use of enantiomerically pure (P)- and (M)-configured CTV units in the tether allowed the isolation of a total of ...

2010

Enantiomerically Pure Alleno-Acetylenic Macrocycles: Synthesis, Solid-State Structures, Chiroptical Properties, and Electron Localization Function Analysis

Pablo Rivera Fuentes

New enantiomerically pure alleno-acetylenic macrocycles were prepd. by oxidative homocoupling of optically active 1,3-diethynylallenes. Enantiomer sepn. resulted from a combined strategy of synthesis and chiral HPLC techniques. Two other achiral stereoisom ...

2010

First enantiomerically pure C70-adducts with a non-inherently chiral addition pattern

Pablo Rivera Fuentes

By addn. of an enantiomerically pure nitrile oxide to C70, four chiral isoxazolo[70]fullerene isomers were prepd. and isolated in pure state: two constitutional isomers resulting from addn. to one of the bonds radiating from the polar pentagons, and a cons ...

2009

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