[EN] A PROCESS FOR THE PREPARATION OF AN ANTICONVULSANT AGENT PREGABALIN HYDROCHLORIDE<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION D'UN AGENT ANTICONVULSIVANT : LE CHLORHYDRATE DE PRÉGABALINE
申请人:COUNCIL SCIENT IND RES
公开号:WO2014181359A1
公开(公告)日:2014-11-13
An efficient synthesis of the anticonvulsant drug, Pregabalin hydrochloride is described using simple transformations in high enantiopurity (>99% ee) and overall yield of 44 to 50%.
A Nickel‐Bisdiamine Porous Organic Polymer as Heterogeneous Chiral Catalyst for Asymmetric Michael Addition to Aliphatic Nitroalkenes
作者:Mikkel B. Buendia、Søren Kegnæs、Søren Kramer
DOI:10.1002/adsc.202000875
日期:2020.12.8
chiral nickel(II)‐bisdiamine complex, which is accessible on gram‐scale. This metal complex functions as a heterogeneous catalyst for the enantioselective Michael addition between malonates and aliphatic nitroalkenes, and it provides yields and enantioselectivities on par with homogeneous catalysts. Good functional group tolerance is reported for this reaction. Upon recycling, the catalyst achieves significantly
Solvent-free organocatalytic Michael addition of diethyl malonate to nitroalkenes: the practical synthesis of Pregabalin and γ-nitrobutyric acid derivatives
作者:Jin-ming Liu、Xin Wang、Ze-mei Ge、Qi Sun、Tie-ming Cheng、Run-tao Li
DOI:10.1016/j.tet.2010.11.053
日期:2011.1
enantioselective synthesis of Pregabalin 1 hydrochloride with good overall yield (44%) and enantioselectivity (98% ee) was described. The key step is an asymmetric Michael addition of equivalent of diethylmalonate and nitroalkene under solvent-free conditions using thiourea 2 as catalyst. The reaction can be applied to a variety of aromatic and aliphatic substituted nitroalkenes affording corresponding