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Intraaggregate Fluxional Lithium and Carbanion Exchanges in a Chiral Lithium Amide/ n ‐Butyllithium Mixed Tetramer Directly Observed by Multinuclear NMR
Author(s) -
Arvidsson Per I.,
Ahlberg Per,
Hilmersson Göran
Publication year - 1999
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19990401)5:4<1348::aid-chem1348>3.0.co;2-l
Subject(s) - carbanion , lithium (medication) , tetramer , lithium amide , chemistry , amide , butyllithium , isotopes of lithium , diastereomer , stereochemistry , crystallography , medicinal chemistry , organic chemistry , ion exchange , ion , enantioselective synthesis , catalysis , psychology , psychiatry , enzyme
Direct observation of fluxional lithium–lithium exchange in a cubic tetramer has been made possible for the first time by a novel type of mixed complex containing n BuLi and the chiral lithium amide lithium ( S )‐2‐(1‐pyrrolidinylmethyl)pyrrolidide (figure).