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Synthesis and Stereochemistry of Chiral Macrocycles Including a 1,2‐Bis(phenylphosphanyl)benzene Unit
Author(s) -
Widhalm Michael,
Klintschar Gerd
Publication year - 1994
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19941270815
Subject(s) - chemistry , stereochemistry , benzene , optically active , nmr spectra database , absolute configuration , nuclear magnetic resonance spectroscopy , spectral line , organic chemistry , physics , astronomy
The synthesis of the four 1,1′‐binaphthyl‐based macrocyclic bisphosphane ligands 6b – e (racemic and optically active) and their square‐planar cis ‐P 2 ‐MCl 2 complexes (M = Ni, Pd) is reported. In three cases isomers could be isolated and identified. The absolute and relative stereochemistry of all ligands and complexes was established on the basis of their NMR and CD spectra and finally confirmed by X‐ray structural determinations of selected ligands and complexes.