Affiliation: | 1. Université de Lorraine, CNRS, LCPM, Nancy, F-54000 France Vietnam Academy of Science and Technology, University of Science and Technology of Hanoi (USTH), Hanoi, Vietnam;2. Université de Lorraine, CNRS, LCPM, Nancy, F-54000 France;3. Aix Marseille Université, CNRS, Marseille, France |
Abstract: | Racemic ethyl 2,3-dibromopropionate, commercially available at low price, is a key intermediate used in the synthesis of several heterocycle fragments, which are present in many biologically active compounds. Surprisingly, the enantiomers are not commercially available and have never been described in the literature. In this work, we undertook two different strategies to obtain these enantiomers, which are enantioselective synthesis and preparative HPLC enantioseparation of commercially available racemate on multigram scale. The first strategy has proved inadequate because racemization occurred during the synthesis (ee ≈ 9-50%). Conversely, the second strategy produced a very good enantioseparation of commercially available racemate (ee > 99.5% for both enantiomers) on multigram scale. |