Zobrazeno 1 - 10 of 10 pro vyhledávání: '"Axel Tomassini"'
1
Diastereoselective Alkylation of (Arene)tricarbonylchromium and Ferrocene Complexes Using a Chiral,C2-Symmetrical 1,2-Diamine as Auxiliary
Autor: Axel Tomassini, Alexandre Alexakis, Gérald Bernardinelli, Olivier Andrey
Publikováno v: European Journal of Organic Chemistry, Vol. 2005, No 7 (2005) pp. 1332-1339
The aminal of (benzaldehyde)tricarbonylchromium and en-antiopure bipyrrolidine undergoes diastereoselective ortho-metallation with butyllithium. Quenching with various electrophiles, followed by hydrolysis of the aminal, affords ortho-substituted (be
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf63b6686ea26f50e7e9d9df4721cfe1
https://doi.org/10.1002/ejoc.200400662
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2
Synthesis and applications of chiral bis-THF in asymmetric synthesis
Autor: Axel Tomassini, Stephane Leconte, Alexandre Alexakis
Publikováno v: Tetrahedron, Vol. 60, No 42 (2004) pp. 9479-9484
The synthesis of enantiopure bis-THF is described, starting from d-mannitol. Bis-THF is used as chiral ligand for organolithium reagents in four different reactions. The enantioselectivity provided by this ligand is moderate, and the asymmetric induc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2c470a31dc43c307c9567f17dc8c89c
https://doi.org/10.1016/j.tet.2004.07.091
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4
The reaction of propiolate acetylides with nitrones. Synthesis of γ-amino-α,β-ethylenic acid derivatives
Autor: Jean-Noẽl Denis, S. Tchertchian, Yannick Vallée, Axel Tomassini
Publikováno v: Tetrahedron Letters. 38:5503-5506
Nitrones react with the lithium anions of ethyl and t-butyl propiolates to give acetylenic N-hydroxylamines. The reduction of these compounds with Zn in the presence of an acid leads to E and Z α,β-ethylenic-γ-aminoacids derivatives. The stereosel
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05655f786cf1c8591e4ce582baedb61f
https://doi.org/10.1016/s0040-4039(97)01210-0
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7
The use of N-alkyl-2,2'-bipyrrolidine derivatives as organocatalysts for the asymmetric Michael addition of ketones and aldehydes to nitroolefins
Autor: Olivier Andrey, Axel Tomassini, Alexandre Alexakis, Gérald Bernardinelli
Publikováno v: Advanced Synthesis and Catalysis, Vol. 346, No 9-10 (2004) pp. 1147-1168
The direct Michael addition of aldehydes and ketones to nitroolefins, catalyzed by N-i-Pr-2,2′-bipyrrolidine, is described. The desired 1,4-adducts are obtained in excellent yields with enantioselectivities up to 95% ee and dr up to 95 : 5 of the s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96edfef945988d5d13498f28fae5f399
https://archive-ouverte.unige.ch/unige:8215
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9
Akademický článek
Diastereoselective Alkylation of (Arene)tricarbonylchromium and Ferrocene Complexes Using a Chiral, C2-Symmetrical 1,2-Diamine as Auxiliary.
Autor: Alexandre Alexakis, Axel Tomassini, Olivier Andrey, Gerald Bernardinelli
Publikováno v: European Journal of Organic Chemistry; Apr2005, Vol. 2005 Issue 7, p1332-1339, 8p
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10
Akademický článek
Diastereoselective Alkylation of (Arene)tricarbonylchromium and Ferrocene Complexes Using a Chiral, C2-Symmetrical 1,2-Diamine as Auxiliary.
Autor: Alexandre Alexakis, Axel Tomassini, Olivier Andrey, Riina Aav, Gerald Bernardinelli
Publikováno v: European Journal of Organic Chemistry; Aug2006, Vol. 2006 Issue 15, p3507-3507, 1p
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