[EN] IMPROVED PROCESS FOR PREPARING 2-[(2E)-2-FLUORO-2-(3-PIPERIDINYLIDENE)ETHYL]-1H-ISOINDOLE-1,3(2H)-DIONE [FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DE 2-[(2E)-2-FLUORO-2- (3-PIPÉRIDINYLIDÈNE)ÉTHYL]-1H-ISOINDOLE-1,3(2H)-DIONE
A diastereoselective Mannich-type reaction of α-fluorinated carboxylate esters: synthesis of β-amino acids containing α-quaternary fluorinated carbon centers
作者:Xiang Li、Ya Li、Huaqi Shang
DOI:10.1039/c6ob01084a
日期:——
We report a diastereoselective Mannich-type reaction of α-alkyl, α-aryl, and α-vinyl fluoroacetates with N-tert-butylsulfinyl imines. This method provides a powerful means to access a broad range of highly functionalized β-amino acids containing α-fluorinated quaternarystereogenic carbon centers. We also show that the stereochemical outcome of the present reaction is highly dependent on the steric