358629-51-3Relevant academic research and scientific papers
A Short Enantioselective Synthesis of (S)-Levetiracetam through Direct Palladium-Catalyzed Asymmetric N -Allylation of Methyl 4-Aminobutyrate
Albat, Dominik,Neud?rfl, J?rg-Martin,Schmalz, Hans-Günther
supporting information, p. 1089 - 1092 (2021/05/26)
An exceedingly short and enantioselective synthesis of the antiepileptic drug (S)-levetiracetam was elaborated. As the chirogenic key step, a Pd-catalyzed asymmetric N -allylation of methyl 4-aminobutyrate was achieved in the presence of only 1 mol% of a catalyst prepared in situ from [Pd(allyl)Cl] 2 and a tartaric acid-derived C 2 -symmetric diphosphine ligand.
Enantioselective access to chiral drugs by using asymmetric hydrogenation catalyzed by Rh(P-OP) complexes
Etayo, Pablo,Nunez-Rico, Jose Luis,Fernandez-Perez, Hector,Vidal-Ferran, Anton
supporting information; experimental part, p. 13978 - 13982 (2012/01/06)
P-OP art: Rhodium complexes of P-OP ligands serve as highly efficient and enantioselective catalysts in asymmetric hydrogenation leading to various valuable pharmaceutical building blocks and several direct precursors of chiral drugs such as LY2497282, la
Process for the preparation of Levetiracetam
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Page/Page column 4, (2011/04/18)
A process for the manufacturing of levetiracetam, wherein said process comprises the steps of: (1) reacting the (?)-(S)-alpha-ethyl-2-oxo-1-pyrrolidine acetic acid with a substoichiometric amount of an activating agent in an alcoholic solvent, and (2) subjecting the resulting reaction solution of step (1) to an ammonolysis process with gaseous ammonia.
Enantioselective hydrogenation catalysis aided by a σ-bonded calix[4]arene to a p-chirogenic aminophosphane phosphinite rhodium complex
Khiri, Naima,Bertrand, Etienne,Ondel-Eymin, Marie-Joelle,Rousselin, Yoann,Bayardon, Jerome,Harvey, Pierre D.,Juge, Sylvain
scheme or table, p. 3622 - 3631 (2010/10/04)
The first P-chirogenic aminophosphane-phosphinite (AMP*P) ligand (4a) supported on the upper rim of a calix[4]arene moiety was synthesized in two steps using the ephedrine methodology. Ligand 4a was used for the preparation of the corresponding rhodium co
PROCESS FOR THE PREPARATION OF LEVETIRACETAM
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Page/Page column 22, (2008/06/13)
The present invention relates to a process for the preparation of levetiracetam and, more particularly, to an improved process for the preparation of levetiracetam characterized by a crystallization-induced dynamic resolution of a diastereoisomeric mixture of an (±)-alpha-ethyl-2-oxo-l -pyrrolidine acetamide derivative.
Process for the preparation of 2-oxo-1-pyrrolidine derivatives
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Page/Page column 16-17, (2010/11/27)
The present invention relates to alternative processes for the preparation of 2-oxo-1-pyrrolidine derivatives of formula (I) Particularly, the present invention relates to alternative processes for the synthesis of levetiracetam, brivaracetam and seletracetam.
Amino acid esters and amides for reductive amination of mucochloric acid: Synthesis of novel γ-lactams, short peptides and antiseizure agent Levetiracetam (Keppra)
Das Sarma, Koushik,Zhang, Ji,Huang, Yun,Davidson, James G.
, p. 3730 - 3737 (2007/10/03)
A simple methodology utilizing mucochloric acid and different α- and β-amino acid esters, amides and short peptides for the synthesis of novel γ-lactam and γ-lactam-based short peptides was developed. The synthesis of an antiseizure agent, Levetiracetam (Keppra) was demonstrated. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
Hydrogenation catalysts
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Page/Page column 3-4, (2008/06/13)
A catalyst comprising a chiral transition metal-(1,2-bis(2,5-dialkylphospholano) complex immobilised on a specific zeolitic support useful for the hydrogenation of prochiral substrates.
