Showing papers by "Emmanuelle Schulz published in 2019"
TL;DR: Sm(II)-catalyzed carboxylation of benzyl halides is reported through the electrochemical reduction of CO2, representing an alternative to traditional strategies, which usually proceeds through the C(sp3)-halide activation pathway.
35 citations
TL;DR: A review of the literature on chiral polymetallic salen complexes used in asymmetric heterogeneous catalysis can be found in this paper, where their preparation, their efficiency as catalysts in various reactions and their recyclability are highlighted according to the immobilization procedures involved for their heterogenization.
Abstract: Chiral salen complexes are privileged and versatile catalysts used in a wide variety of enantioselective transformations. Researches for their use in multicatalysis, including cooperative as well as tandem processes, are more recent, but many reports already highlight the important effect of the salen ligand structure on reaction rates and/or selectivities. This review article thus outlines the literature covering last five years, on the current developments of chiral polymetallic salen complexes used in asymmetric heterogeneous catalysis; their preparation, their efficiency as catalysts in various reactions and their recyclability are highlighted according to the immobilization procedures involved for their heterogenization. These methods include grafting on organic or inorganic supports insuring easy recovery by simple filtration. Polymerization processes are also part of recent research, leading to high densities of catalytic sites to favor their cooperativity. Combination of salen complexes via non covalent interactions or their introduction on MOFs and COFs networks is currently in full expansion, with examples of highly functionalized and enantioenriched products issued from tandem catalysis.
33 citations
TL;DR: The reductive carboxylation of aryl halides has been investigated using a samarium electrode as a sacrificial anode to yield the corresponding benzoic acids, providing a smooth strategy for CO2 activation.
Abstract: The reductive carboxylation of aryl halides has been investigated using a samarium electrode as a sacrificial anode to yield the corresponding benzoic acids, providing a smooth strategy for CO2 activation. Carboxylation occurred after an efficient reduction of carbon dioxide mediated by an electrogenerated Sm(ii)-complex acting as a strong monoelectronic reductive reagent.
30 citations
TL;DR: The photooxygenation of 2-propargylfurans enabled access to original nitrogen-containing cyclopentenones and related compounds in a one-pot fashion by employing readily-available substrates such as furans and amines and relies on the introduction of an alkyne moiety and tailored substrates.
7 citations