From Proton to Boron: The Lewis Analogs of Protonated Brønsted Super Acids

Autor: Arnaud Osi, Nikolay Tumanov, Luca Fusaro, Johan Wouters, Guillaume Berionni, Aurélien Chardon

Publikováno v: Chemistry – A European Journal.

Isolation and characterization of highly reactive intermediates are crucial to understand the nature of chemical reactivity. Accordingly, the reactivity of weakly coordinating anions (WCA), usually used to stabilized cationic super electrophiles are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08820517bf3cedb39cab108c73e7f74f
https://doi.org/10.1002/chem.202301146

Association of Pyramidal Boron Lewis Superacids with Pyridines: Bending 2,4,6‐Collidine with the 10‐Sulfonium‐9‐boratriptycene

Autor: Arnaud Osi, Nicolas Niessen, Damien Mahaut, Benoît Champagne, Aurélien Chardon, Nikolay Tumanov, Johan Wouters, Guillaume Berionni

Publikováno v: Zeitschrift für anorganische und allgemeine Chemie. 649

The association of pyridine and of 2,4,6-trimethylpyridine (collidine) with a pyramidal triarylborane belonging to the 9-boratriptycene family is investigated by NMR spectroscopy and by X-ray diffraction analysis. Despite of the large size of the ort

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1411aa82a2e0d970e567770abce912c3
https://doi.org/10.1002/zaac.202300009

Controlled Generation of 9-Boratriptycene by Lewis Adduct Dissociation

Autor: Damien Mahaut, Johan Wouters, Arnaud Osi, Thu Hong Doan, Benoît Champagne, Guillaume Berionni, Nikolay Tumanov, Luca Fusaro, Aurélien Chardon

Publikováno v: Chardon, A, Osi, A, Mahaut, D, Doan, T H, Tumanov, N, Wouters, J, Fusaro, L, Champagne, B & Berionni, G 2020, ' Controlled Generation of 9-Boratriptycene by Lewis Adduct Dissociation : Accessing a Non-Planar Triarylborane ', Angewandte Chemie-International Edition, vol. 59, no. 30, pp. 12402-12406 . https://doi.org/10.1002/anie.202003119

A highly bent triarylborane, 9-boratriptycene, was generated in solution by selective protodeboronation of the corresponding tetra-aryl boron ate complex with the strong Brønsted acid HNTf2. The iptycene core confers enhanced Lewis acidity to 9-bora

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0534d5b534ed80173bb13ddc8d24ec5d
https://doi.org/10.1002/ange.202003119

Taming the Lewis Superacidity of Non‐Planar Boranes: C−H Bond Activation and Non‐Classical Binding Modes at Boron

Autor: Damien Mahaut, Arnaud Osi, Benoît Champagne, Johan Wouters, Guillaume Berionni, Nikolay Tumanov, Luca Fusaro, Aurélien Chardon

Publikováno v: Angewandte Chemie International Edition. 61

The rational design of a geometrically constrained boron Lewis superacid featuring exceptional structure and reactivity is disclosed. It enabled the formation of non-classical electron deficient B−H−B type of bonding, which was supported by spect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96ba8297b8dc10346ce65e95cc961600
https://doi.org/10.1002/anie.202112342

Sulfur-based chiral iodoarenes: an underexplored class of chiral hypervalent iodine reagents

Autor: Fatemah Karam, Thomas Wirth, Mohamed Elsherbini, Arnaud Osi, Haifa Alharbi

Chiral hypervalent iodine reagents are active players in modern stereoselective organic synthesis. Structurally diverse chiral hypervalent iodine reagents have been synthesised and extensively studied, but hypervalent iodine reagents containing chira

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7fbf87ed345ab4f9b8c076c0c494e0b
https://orca.cardiff.ac.uk/id/eprint/141493/7/a-1508-9593.pdf