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A novel use of cobalt(III) meso-tetraphenylporphyrin as a chiral shift reagent

✍ Scribed by Raymond J. Abraham; James Plant; Geoffrey R. Bedford; Brian Wright

Book ID
102527368
Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
329 KB
Volume
22
Category
Article
ISSN
0749-1581

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✦ Synopsis

The NMR spectra of the diastereomeric complexes formed by the coordination of nitrogenous enantiomeric bases with cobalt(I1I) meso-tetraphenylporphyin (CoTPP) allow the immediate differentiation of these complexes. The spectra are interpreted on the basis of symmetry (RR and SS) and pseudo-chirality (RS and SR) considerations. The effects are observed in both the proton and carbon spectra and the complexes are stable in both CM=13 and DMSO-d, solution. This techniqne, in principle, allows the ready determination of the optical purity of multifunctional ligands.

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