Zobrazeno 1 - 10 of 35 pro vyhledávání: '"Béatrice Pelotier"'
1
Access to Hexahydroindeno[2,1-c]pyran-Based Propellanes by a Domino Prins/Friedel–Crafts Cyclization
Autor: Olivier Piva, Youssef Nassar, Fabienne Fache, Béatrice Pelotier
Publikováno v: Synthesis. 54:4622-4628
Starting from readily available cyclic homoallylic alcohols, a Prins reaction allowed the formation of a bicyclic tetrahydropyranyl carbocation intermediate that is only trapped by electron-rich aromatic rings according a further intramolecular Fried
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2954bc9a658f69c6c067547c6dbb6f3a
https://doi.org/10.1055/a-1882-8128
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2
Formal enantioselective synthesis of nhatrangin A
Autor: Sophie Feuillastre, Ludovic Raffier, Olivier Piva, Béatrice Pelotier
Publikováno v: Organic & Biomolecular Chemistry. 18:1949-1956
A new and straightforward synthesis of the C1-C7 core fragment of nhatrangin A was achieved in 14 steps from achiral 3-hydroxybenzaldehyde, without the need of chiral reagents or enzymatic resolution to introduce the chiral centers. The key asymmetri
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16d7e2635893ab942b6f56d7e757fc62
https://doi.org/10.1039/c9ob02639h
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3
Green Access to α-Haloalkyl and α-Halobenzyl Esters, Versatile Intermediates for the One-Pot Two-Step Synthesis of O,O′-Diacyl Acetals Using Zinc-Based Ionic Liquid Catalyst
Autor: Olivier Piva, Béatrice Pelotier, Ignasi de Azpiazu, Fabienne Fache, Christel Gozzi
Publikováno v: SYNTHESIS
SYNTHESIS, Georg Thieme Verlag, 2019, ⟨10.1055/s-0037-1612415⟩
SYNTHESIS, Georg Thieme Verlag, 2019, 51 (11), pp.2430-2434. ⟨10.1055/s-0037-1612415⟩
α-Haloalkyl and α-halobenzyl esters have been synthesized using a zinc-based ionic liquid catalyst, BMIZnCl3. These esters can then react with acids without intermediate purification to obtain mixed O,O′-diacyl acetals in a one-pot process.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffcb443ef501c7962180376ccc39ed43
https://doi.org/10.1055/s-0037-1612415
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4
Desymmetrization of Hepta-1,6-dien-4-ol by a Highly Stereo­selective Tandem Prins–Ritter Cyclization: Access to New THP Acetamides
Autor: Fabienne Fache, Béatrice Pelotier, Olivier Piva, Thomas Glachet
Publikováno v: Synthesis. 49:5197-5202
Prins–Ritter cyclization performed from hepta-1,6-dien-4-ol and various aldehydes, promoted by bismuth(II) triflate, afforded N-(tetrahydropyranyl)acetamides in moderate to high yields. Subsequent Wacker-type oxidation using Dess–Martin periodina
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::022ff7fe3d66cfd9b5e4b723422fffa9
https://doi.org/10.1055/s-0036-1588521
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7
Stereoselective Access to Trisubstituted Cyclopentanols from Chiral Unsaturated Oxo Esters by Ketyl Radical Cyclization
Autor: Olivier Piva, Sophie Feuillastre, Béatrice Pelotier
Publikováno v: European Journal of Organic Chemistry. 2014:1753-1759
Substituted cyclopentanols with three contiguous stereocenters were prepared with impressive diastereocontrol through a samarium diiodide induced 5-exo-trig radical process. The chiral unsaturated oxo ester precursors were prepared with ee values up
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::633d185a1c4642d4a50377320418d077
https://doi.org/10.1002/ejoc.201301767
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8
Merging Cross-Metathesis and Radical Cyclization: A Straightforward Access to 4-Substituted Benzosultams
Autor: Sophie Feuillastre, Olivier Piva, Béatrice Pelotier
Publikováno v: Synthesis. 45:810-816
N-Alkyl-N-allyl-2-bromobenzenesulfonamides were functionalized by selective E-cross-metathesis with various alkenes. Subsequent radical cyclization initiated by 2,2′-azobis(isobutyronitrile) and tris(trimethylsilyl)silane gave the corresponding 4-s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c12acda60fb082f253fbc2a0bd4578f
https://doi.org/10.1055/s-0032-1318147
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10
Solvent-Free, Metal-Free, Aza-Prins Cyclization: Unprecedented Access to δ-Sultams
Autor: Damien Clarisse, Fabienne Fache, Béatrice Pelotier
Publikováno v: Chemistry-A European Journal
Chemistry-A European Journal, Wiley-VCH Verlag, 2013, 19 (3), pp.857-860
International audience; Aza-Prins and the pauper: Aza-Prins cyclization between γ,δ-unsaturated tosylamines and aldehydes was successfully performed under solvent-free and metal-free conditions. When applied to β,γ-unsaturated sulfonamides, the c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d78e2179958939a10f93fff4e6a909c
https://doi.org/10.1002/chem.201203415
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