Abstract:
:Six secondary phosphine oxides and their tautomeric equilibria as free ligands and in the presence of an equimolar amount of the chiral dirhodium complex Rh* are described and discussed. Discrimination of enantiomers is easily possible by inspecting the (31)P NMR resonances; some (1)H and (13)C NMR resonances are useful as well. H/D exchange of the acidic protons in the phosphine oxides takes place with acetone-d(6), the solvent additive, after some hours but does not obscure the chiral recognition experiment. (103)Rh,(31)P coupling constants are discussed briefly. Decomposition of ligand molecules in 1:1-Rh*-adducts occurs slowly but completely.
journal_name
Chiralityjournal_title
Chiralityauthors
Magiera D,Szmigielska A,Pietrusiewicz KM,Duddeck Hdoi
10.1002/chir.10306subject
Has Abstractpub_date
2004-01-01 00:00:00pages
57-64issue
1eissn
0899-0042issn
1520-636Xjournal_volume
16pub_type
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