Publications de Laetitia Marie Mélanie Souillart

Strain-Promoted C-C Bond Cleavages of Cyclobutanes : A Molecular Complexity Generating Tool

The catalytic activation of carbon-carbon single bonds is a major challenge in organometallic chemistry, since the lack of prefunctionalization steps opens the way to new, economically and ecologically attractive reaction pathways. Strained ring substrates ...

EPFL2015

Enantioselective Rhodium-catalyzed C-C Bond Activation of Cyclobutanones

Nicolai Cramer, Laetitia Marie Mélanie Souillart

The activation of carbon-carbon bonds has attracted much attention in the past decade. Despite important progress, the development of asymmetric reactions lags behind. For the first time, asymmetric rhodium(I)-catalyzed direct oxidative additions into enan ...

Swiss Chemical Soc2015

Regiodivergent Cyclobutanone Cleavage: Switching Selectivity with Different Lewis Acids

Nicolai Cramer, Laetitia Marie Mélanie Souillart

The exploitation of strain release in small rings as driving force to enable complex transformations is a powerful synthetic tool. Among them, cyclobutanones are particularly versatile substrates that can be elaborated in a wide variety of structurally div ...

Wiley-Blackwell2015

Catalytic C-C Bond Activations via Oxidative Addition to Transition Metals

Nicolai Cramer, Laetitia Marie Mélanie Souillart

Selective cleavages of carbon-carbon bonds catalyzed by transition-metal complexes have been shown to be increasingly versatile tools for organic synthesis allowing for complementary synthetic strategies. Numerous examples of transition-metal catalyzed C-C ...

Amer Chemical Soc2015

Highly Enantioselective Rhodium(I)-Catalyzed Activation of Enantiotopic Cyclobutanone C-C Bonds

Nicolai Cramer, Laetitia Marie Mélanie Souillart

The selective functionalization of carbon-carbon sigma bonds is a synthetic strategy that offers uncommon retrosynthetic disconnections. Despite progress in CC activation and its great importance, the development of asymmetric reactions lags behind. Rhodiu ...

Wiley-VCH Verlag GmbH2014

Exploitation of Rh(I)-Rh(III) cycles in enantioselective C-C bond cleavages: access to beta-tetralones and benzobicyclo[2.2.2]octanones

Nicolai Cramer, Laetitia Marie Mélanie Souillart

Rhodium(I)-catalyzed beta-carbon eliminations of tert-cyclobutanols followed by oxidative addition give benzorhoda(III)cyclopentenes. These key intermediates trigger intramolecular C-H arylations leading to beta-tetralones with quaternary stereogenic cente ...

Royal Soc Chemistry2014

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