Chiral Monofluorobenzyl Carbanions: Synthesis of Enantiopure β‐Fluorinated β‐Phenylethylamines
作者:José L. García Ruano、Alejandro Parra、Inés Alonso、Santos Fustero、Carlos del Pozo、Yolanda Arroyo、Ascensión Sanz‐Tejedor
DOI:10.1002/chem.201100455
日期:2011.5.23
monofluorobenzyl carbanion by means of a remote homochiral sulfinyl group and its completely stereoselective reactions with N‐p‐tolylsulfinylimines are described. The use of these reactions followed by the simultaneous removal of both chiral auxiliaries with tBuLi, which occurs without epimerization at the benzylic position, provides the quickest entry to enantiomerically pure β‐fluorinated β‐phenylethylamines
稳定化的负碳离子monofluorobenzyl由远程纯手性亚磺酰基的手段和其与完全立体选择性反应制备ñ - p -tolylsulfinylimines中描述。使用这些反应后,同时用t BuLi除去两个手性助剂,这在苄基位置没有差向异构发生,为对映体纯的β-氟化的β-苯基乙胺提供了最快的进入途径。