Chiral Cyclopentadienyl Ruthenium (II) Complexes : Synthesis and Applications in Catalysis

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Isocyanoacetates as Synthetic Platform Towards Natural Products and Biologically Relevant Scaffolds

Thomas Bertrand Pascal Marie Buyck

My PhD work started with the development of a racemic access to trigonoliimine B, an hexacyclic alkaloid isolated in 2010. After having explored different strategies, we reported a 7-step synthesis of this natural product. This synthesis features a challen ...

EPFL2014

Highly Enantioselective Rhodium(I)-Catalyzed Carbonyl Carboacylations Initiated by C-C Bond Activation

Nicolai Cramer, Laetitia Marie Mélanie Souillart

The lactone motif is ubiquitous in natural products and pharmaceuticals. The Tishchenko disproportionation of two aldehydes, a carbonyl hydroacylation, is an efficient and atom-economic access to lactones. However, these reaction types are limited to the t ...

Wiley-Blackwell2014

Catalytic Formal Homo-Nazarov Reaction and Other Cyclizations of Cyclopropanes : from Methodology to Total Synthesis

Filippo De Simone

The increasing progress in medicinal chemistry and chemical biology requires more versatile synthetic strategies for the generation of libraries of active compounds and theirs analogues. A wide range of biologically active natural and synthetic compounds c ...

EPFL2012

New polynuclear catalysts for atom-transfer radical addition reactions

Laurent Quebatte

Homo- and heterobimetallic complexes of the late transitions metals have been synthesized by metathesis reactions of the corresponding chloro-bridged dimers. These reactions have the advantage of being fast and giving rise to structurally defined products ...

EPFL2006

Le réarrangement [1,2] de Wittig : contribution à l'étude de son mécanisme et de ses applications

Frédéric Bailly

The importance of catalysis in chemistry has not to be proved anymore. Be it homogeneous or heterogeneous catalysis, the constant progresses observed in that field proves its obvious interest. The asymmetric homogeneous catalysis is a method of choice to s ...

EPFL2005

Supramolecular triruthenium cluster-based benzene hydrogenation catalysis: Fact or fiction?

Gabor Laurenczy

The question is addressed of whether the triruthenium cluster cation Ru-3(mu(2)-H)(3)(eta(6)C(6)H(6))(eta(6)-C6Me6)(2)(mu(3)-O), 1, is a supramolecular, outer-sphere benzene hydrogenation catalyst or is 1 a precatalyst to well-known Ru(0)(n) catalysis ...

2005

Polysulfones as new organic catalysts : mechanism and development of new strategies for polyol selective semi-protection

Dean Markovic

Even unsubstituted butadiene adds to sulfur dioxide in the hetero-Diels-Alder mode more rapidly than in the chelotropic mode. The sultine can be observed in equilibrium with the diene and the sulfur dioxide only at low temperature and in the presence of CF ...

EPFL2005

Synthesis of aza-C-disaccharides (dideoxyimino-alditols C-linked to monosaccharides) and analogues

Pierre Vogel

The first aza-C-disaccharide (D-azaMan-beta-CHz-(1 -> 6)-D-Man-alpha-OMe) that mimicks alpha-D-Manp-(1 -> 6)-alpha-D-ManOMe was made in 1994 by Johnson and coworkers. Several synthetic approaches to these disaccharide mimetics have been proposed. These are ...

Georg Thieme Verlag2005

New developments on silyl 2-alkenyl sulfinates and their applications to the asymmetric synthesis of polypropionate fragments

Xiaogen Huang

Sulphur dioxide reacts with 1-oxydienes generating zwitterions which are quenched by enoxysilanes to form substituted silyl alkenylsulfinates. These intermediates are desilylated with Bu4NF and the resulting sulfinates react with MeI giving the correspondi ...

EPFL2004