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ABSTRACT:
SUBMITTER: Popp J
PROVIDER: S-EPMC7317868 | biostudies-literature | 2020 May
REPOSITORIES: biostudies-literature
Chemistry (Weinheim an der Bergstrasse, Germany) 20200401 26
Tertiary phosphines are generally known to withstand inversion under moderate conditions. In this work, a remarkable racemization process of three P-chiral ferrocenyl phosphines is reported. Subjected to conventional column chromatography as highly enantioenriched compounds, they greatly experienced racemization when collected at the column outlet within minutes. Initially, attention was drawn to this unusual inversion behavior after observing that the superb enantiomeric excess of these ligands ...[more]