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Kurt Schenk

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Publications associées (57)

Concise Synthesis of Pyrrolidine and Indolizidine Alkaloids by a Highly Convergent Three-Component Reaction

Philippe Renaud, Kurt Schenk

The synthesis of pyrrolidine and indolizidine derivatives through radical carboazidation of alkenes with alpha-iodoketones, followed by reductive amination, is described. When properly substituted, further lactamization afforded pyrrolizidinones in good yi ...

2011

Total Synthesis of (+/-)-Cylindricine C

Philippe Renaud, Kurt Schenk

A concise synthesis of (+/-)-cylindricine C and its C(13)-epimer is described. Starting from 1-octyne, cylindricine C and 13-epi-cylindricine C were prepared in 11% and 15% yields, respectively. The synthesis involves the preparation of the central tricycl ...

2011

Synthesis of Unusual Oxime Ethers by Reaction of Tetranitromethane with B-Alkylcatecholboranes

Philippe Renaud, Kurt Schenk

The reaction of tetranitromethane with B-alkylcatecholboranes leads to the formation of unusual dinitrooxime ethers. A tentative mechanism is provided, which suggests the involvement of extremely fast addition of alkyl radicals to tetranitromethane. The su ...

2010

Dimerization of Dendrimeric Lanthanide Complexes: Thermodynamic, Thermal, and Liquid-Crystalline Properties

Thomas Binderup Jensen, Kurt Schenk

A series of 10 different mesomorphic semidendrimeric tridentate ligands L5-L14 grafted with terminal cyanobiphenyl groups have been synthesized. Upon reaction with Ln(NO3)(3) (Ln = trivalent lanthanide), the central 2,6-bis(N-ethylbenzimidazol-2-yl)pyridin ...

2010

Oxidation of Catecholboron Enolates with TEMPO

Philippe Renaud, Kurt Schenk

Wiley-VCH Verlag GmbH2009

Diastereoselectivity Control of the Radical Carboazidation of Substituted Methylenecyclohexanes

Philippe Renaud, Kurt Schenk

[Graphics] ...

2009

Differential geometry: a natural tool for describing symmetry operations

Gervais Chapuis, Kurt Schenk, Philippe Kocian

Differential geometry provides a useful mathematical framework for describing the fundamental concepts in crystallography. The notions of point and associated vector spaces correspond to those of manifold and tangent space at a given point. A space-group o ...

International Union of Crystallography2009

B-Alkylcatecholborane-Mediated Tandem Radical Conjugated Addition-Aldol Cyclization

Philippe Renaud, Kurt Schenk

A one-pot procedure involving radical conjugate addition of B-alkylcatecholboranes to enones followed by intramolecular aldol reaction is reported. Application to the stereoselective synthesis of monocyclic and bicyclic products with up to four contiguous ...

2009

{2,2 '-[1,1 '-(3-Azapentane-1,5-diyldinitrilo)diethylidyne] diphenolato}(piperidine) cobalt(III) tetraphenylborate

Kurt Schenk

The title compound, Co(C20H23N3O2)(C5H11N) or [Co{(Me-sal)(2)dien}(pprdn)] BPh4, where (Me-sal) 2dien is 2,2'[1,1'-(3-azapentane-1,5-diyldinitrilo)diethylidyne]diphenolate and pprdn is piperidine, contains a pentadentate (Me-sal) 2dien ligand fu ...

2008

Pizgrischite, (Cu,Fe)Cu14PbBi17S35, a new sulfosalt from the Swiss Alps: Description, crystal structure and occurrence

Kurt Schenk

Pizgrischite, (Cu,Fe)Cu14PbBi17S35, is a new mineral species named after the type locality, Piz Grisch Mountain, Val Ferrera, Graubunden, Switzerland. This sulfosalt occurs as thin, striated, metallic lead-grey blades measuring up to I cm in length, embedd ...

Mineralogical Association of Canada2007

Potassium gallium hydrogenphosphate fluoride, ${K_2Ga[H(HPO_4)_2]F_2}$

Gervais Chapuis, Kurt Schenk

2007

Polymorphism in N-Salicylideneaniline Reconsidered

Gervais Chapuis, Kurt Schenk, Philip Pattison

2007

Co(III) complexes of Me-salpn and Me-salbn and the ring size effect on the coordination modes and electrochemical properties: The crystal structures of trans-[Co-III(Me-salpn)(py)(2)]PF6 and cis-alpha-[Co-III(Me-salbn)(4-Mepy)(2)]BPh4 center dot 4-Mepy

Kurt Schenk

The synthesis and characterization of a series of cobalt(III) complexes of the general type Co(N2O2)(L-2) are described. The N2O2 Schiff base ligands used are Me-salpn (H2Me-salpn = N,N'-bis(methylsalicylidene)-1,3-propylenediamine) (1-3) and Me-salbn ...

2007

The incommensurately modulated structure of a tricyclic natural-product-like compound of empirical formula C22H20O3

Gervais Chapuis, Kurt Schenk

2006

Intense near-infrared luminescence of a mesomorphic ionic liquid doped with lanthanide b-diketonate ternary complexes

Jean-Claude Bünzli, Kurt Schenk

The ionic liquid 1-dodecyl-3-methylimidazole chloride ([C12- mim]Cl) is doped with 1 mol-% of the lanthanide ternary complexes [Ln(tta)3(phen)] (tta = thenoyltrifluoroacetonate, phen = 1,10-phenanthroline, Ln = Nd, Eu, Er, Yb), resulting in luminescent mes ...

2005

Synthesis of nanoscopic optical fibers using lipid membranes as templates

Rudolf Hovius, Pierre Stadelmann, Horst Vogel, Dimitrios Stamou, Marinela Gjoni Boillat, Jean-Manuel Segura, Gopakumar Gopalakrishnan, Kurt Schenk, Cédric Gaillard

High-aspect-ratio, monocryst. Cd chloride nanowires doped with fluorescent CdS nanoparticles were synthesized using planar lipid membranes as templates. Cd2+ ions bound to the lipid bilayers (a) are released at low pH to the nanometer-sized, interlamellar ...

Wiley-VCH Verlag GmbH2005

Stepwise assembly of amphiphilic ruthenium sensitizers and their applications in dye-sensitized solar cell

Pascal Comte, Michael Graetzel, Paul Liska, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Guido Viscardi, Kurt Schenk

2004

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