Search Results - "Tomassini, Axel"

The Use of N-Alkyl-2,2′-bipyrrolidine Derivatives as Organocatalysts for the Asymmetric Michael Addition of Ketones and Aldehydes to Nitroolefins by Andrey, Olivier, Alexakis, Alexandre, Tomassini, Axel, Bernardinelli, Gerald

“…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…”
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A New Efficient Synthesis of (R,R)-2,2′-Bipyrrolidine: An Interesting Chiral 1,2-Diamine withC2 Symmetry by Alexakis, Alexandre, Tomassini, Axel, Chouillet, Cyril, Roland, Sylvain, Mangeney, Pierre, Bernardinelli, Gerald

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A New Efficient Synthesis of (R,R)-2,2′-Bipyrrolidine: An Interesting Chiral 1,2-Diamine with C2 Symmetry by Alexakis, Alexandre, Tomassini, Axel, Chouillet, Cyril, Roland, Sylvain, Mangeney, Pierre, Bernardinelli, Gerald

“…Making stairs: A new conformational concept is presented for the synthesis of derivatives of C2‐symmetrical 1,2‐diamines, where a stairlike arrangement is…”
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Diastereoselective Alkylation of (Arene)tricarbonylchromium and Ferrocene Complexes Using a Chiral, C 2 ‐Symmetrical 1,2‐Diamine as Auxiliary by Alexakis, Alexandre, Tomassini, Axel, Andrey, Olivier, Bernardinelli, Gerald

“…The aminal of (benzaldehyde)tricarbonylchromium and en‐antiopure bipyrrolidine undergoes diastereoselective ortho ‐metallation with butyllithium. Quenching…”
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Synthesis and applications of chiral bis-THF in asymmetric synthesis by Alexakis, Alexandre, Tomassini, Axel, Leconte, Stéphane

“…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…”
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Diastereoselective Alkylation of (Arene)tricarbonylchromium and Ferrocene Complexes Using a Chiral, C2-Symmetrical 1,2-Diamine as Auxiliary by Alexakis, Alexandre, Tomassini, Axel, Andrey, Olivier, Aav, Riina, Bernardinelli, Gerald

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Diastereoselective Alkylation of (Arene)tricarbonylchromium and Ferrocene Complexes Using a Chiral, C 2 ‐Symmetrical 1,2‐Diamine as Auxiliary by Alexakis, Alexandre, Tomassini, Axel, Andrey, Olivier, Aav, Riina, Bernardinelli, Gerald

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Isolation of a Pyridinium Alkoxy Ion Bridged Dimeric Zinc Complex for the Coupling Reactions of CO2 and Epoxides by Kim, Hoon Sik, Kim, Jai Jun, Lee, Byung Gwon, Jung, Ok Sang, Jang, Ho Gyeom, Kang, Sang Ook

“…The intermediate itself is an active species: The pyridinium alkoxy ion bridged zinc complex 1, formed by the reaction of [(C6H5N)2ZnBr2] and propylene oxide,…”
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The reaction of propiolate acetylides with nitrones. Synthesis of γ-amino-α,β-ethylenic acid derivatives by Denis, Jean-Noẽl, Tchertchian, Sylvie, Tomassini, Axel, Vallée, Yannick

“…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…”
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A New Efficient Synthesis of (R,R)-2,2′-Bipyrrolidine: An Interesting Chiral 1,2-Diamine with C2 Symmetry by Alexakis, Alexandre, Tomassini, Axel, Chouillet, Cyril, Roland, Sylvain, Mangeney, Pierre, Bernardinelli, Gerald

“…Treppen bauen: Ein neues Konformationsdesign‐Konzept wurde auf die Synthese von Derivaten C2‐symmetrischer 1,2‐Diamine angewandt, wobei den Verbindungen eine…”
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A New Efficient Synthesis of (R,R)-2,2′-Bipyrrolidine: An Interesting Chiral 1,2-Diamine withC2 Symmetry by Alexakis, Alexandre, Tomassini, Axel, Chouillet, Cyril, Roland, Sylvain, Mangeney, Pierre, Bernardinelli, Gerald

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Diastereoselective Alkylation of (Arene)tricarbonylchromium and Ferrocene Complexes Using a Chiral, C2-Symmetrical 1,2-Diamine as Auxiliary by Alexakis, Alexandre, Tomassini, Axel, Andrey, Olivier, Bernardinelli, Gerald

“…The aminal of (benzaldehyde)tricarbonylchromium and en‐antiopure bipyrrolidine undergoes diastereoselective ortho‐metallation with butyllithium. Quenching with…”
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