Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Kim Spielmann"'
Publikováno v:
Isr J Chem
Two catalytic systems for the formate-mediated cross-electrophile reductive coupling of 4-iodoansiole with 6-bromopyridines are described. Using homogenous rhodium or heterogeneous palladium catalysts, the product of reductive biaryl cross-coupling c
Publikováno v:
SYNLETT
SYNLETT, Georg Thieme Verlag, 2021, 32, pp.517-520. ⟨10.1055/s-0040-1706007⟩
SYNLETT, Georg Thieme Verlag, 2021, 32, pp.517-520. ⟨10.1055/s-0040-1706007⟩
Vinyl aziridines are versatile starting materials toward ring-expansion transformations. Such processes are widely used to give various medium or larger N-heterocycles of synthetic interest. This letter describes a copper-catalyzed ring expansion of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09b86eb3dfdbab93190c62c2580f4a1d
https://hal.archives-ouvertes.fr/hal-03165251/document
https://hal.archives-ouvertes.fr/hal-03165251/document
Publikováno v:
Chemistry-A European Journal
Chemistry-A European Journal, Wiley-VCH Verlag, 2018, 24 (25), pp.6617-6624. ⟨10.1002/chem.201800099⟩
Chemistry-A European Journal, Wiley-VCH Verlag, 2018, 24 (25), pp.6617-6624. ⟨10.1002/chem.201800099⟩
International audience; Exchange of X (F, Cl, OMe) and a substituted enolate chain between SiMe3 and various CuI complexes was examined. Reaction mechanisms pass through a cyclic transition state in which the reaction coordinate is associated with ro
Publikováno v:
Organic Letters
Organic Letters, American Chemical Society, 2018, 20 (5), pp.1444-1447. ⟨10.1021/acs.orglett.8b00228⟩
Organic Letters, American Chemical Society, 2018, 20 (5), pp.1444-1447. ⟨10.1021/acs.orglett.8b00228⟩
The synthesis of cyclic imidazolidines via two N–C bond-forming sequences has been developed. The transformation goes through a (3 + 2)-cycloaddition reaction in the presence of catalytic amounts of palladium by combining several vinyl aziridines a
Publikováno v:
Journal of Organic Chemistry
Journal of Organic Chemistry, American Chemical Society, 2017, 82, pp.4737-4743. ⟨10.1021/acs.joc.7b00419⟩
Journal of Organic Chemistry, American Chemical Society, 2017, 82, pp.4737-4743. ⟨10.1021/acs.joc.7b00419⟩
International audience; A straightforward strategy for the syntheses of curcumene and ar-himachalene is reported. Synthetic highlights include a catalytic and asymmetric vinylogous Mukaiyama reaction and a stereospecific hydrogenolysis of a tertiary
Publikováno v:
J Am Chem Soc
The first catalytic enantioselective carbonyl (α-amino)allylations are described. Phthalimido-allene 1 and primary alcohols 2a–2z, 2a′–2c′ engage in hydrogen auto-transfer-mediated carbonyl reductive coupling by way of (α-amino)allyliridium
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce47359e866ee3c78d7aa298b1502c81
https://europepmc.org/articles/PMC6739137/
https://europepmc.org/articles/PMC6739137/
Autor:
Gilles Niel, Arie van der Lee, Eleonora Tosi, Renata Marcia de Figueiredo, Aurélien Lebrun, Kim Spielmann, Jean-Marc Campagne
Publikováno v:
Tetrahedron
Tetrahedron, Elsevier, 2018, 74 (45), pp.6497-6511. ⟨10.1016/j.tet.2018.09.040⟩
Tetrahedron, Elsevier, 2018, 74 (45), pp.6497-6511. ⟨10.1016/j.tet.2018.09.040⟩
International audience; Efficient palladium-catalyzed (3 þ 2)-cycloaddition reactions of cyclic N-sulfonyl imines and vinyl-aziridines (or cyclopropanes) have been achieved. The reactions, with either vinylic substrate, proceed with excellent yields
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad8daf56e34ada90ca4000445df37c55
https://hal.archives-ouvertes.fr/hal-01892430
https://hal.archives-ouvertes.fr/hal-01892430
Publikováno v:
Chemical Society Reviews
Chemical Society Reviews, Royal Society of Chemistry, 2018, 47, pp.1159-1173. ⟨10.1039/c7cs00449d⟩
Chemical Society Reviews, Royal Society of Chemistry, 2018, 47, pp.1159-1173. 〈10.1039/c7cs00449d〉
Chemical Society Reviews, Royal Society of Chemistry, 2018, 47, pp.1159-1173. ⟨10.1039/c7cs00449d⟩
Chemical Society Reviews, Royal Society of Chemistry, 2018, 47, pp.1159-1173. 〈10.1039/c7cs00449d〉
International audience; After seminal Tsuji-Trost reactions (palladium catalyzed allylation of nucleophiles via -allyl intermediates as electrophiles),the idea of reversal reactivity of -allyl intermediates (i.e. -allyl as nucleophiles) has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f34663ebfa7c83335fc020743909a761
https://hal.archives-ouvertes.fr/hal-01678237
https://hal.archives-ouvertes.fr/hal-01678237
Autor:
Jean Martinez, Vincent Lisowski, Kim Spielmann, Ludovic T. Maillard, Jean-Daniel Malcor, Yann Brouillette, Nicolas Masurier, Julien Graffion
Publikováno v:
Tetrahedron. 70:4631-4639
A convenient synthesis of pyrrolo[3,2- d ][1,3]oxazine-2,4-dione 4 is described and its reactivity towards various nucleophiles studied. The regioselective ring opening of anhydride 4 or its N -alkylated analog 25 in the presence of alanine or prolin
Autor:
Jean Martinez, Julien Graffion, Nicolas Masurier, Ludovic T. Maillard, Vincent Lisowski, Yann Brouillette, Kim Spielmann, Jean-Daniel Malcor
Publikováno v:
ChemInform. 45
Ester (I), readily available from isoxazole in 3 steps, is transformed to the desired ring system (III) whose reactivity toward amines, thiols, alcohols, and amino acids is investigated.