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1H-NMR-Untersuchungen zur Identifizierung E/Z-isomerer Vinylthiophosphate und Vinylphosphate

✍ Scribed by Dr. A. Preiss; Dipl.-Chem. St. Dietzel; Dipl.-Chem. H. Fedgenhäuer; Dr. B. Hesse

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
328 KB
Volume
322
Category
Article
ISSN
1615-4150

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✦ Synopsis

^1^H‐N.M.R.‐Studies on the Identification of E/Z‐isomeric Vinyl Phosphorothioates and Vinyl Phosphates

The E/Z assignment of 1, 1, 2‐tri and tetrasubstituted vinyl phosphorothioates and vinyl phosphates by ^1^H‐n.m.r. investigations is described. While the assignment of 1, 1, 2‐trisubstituted compounds is based on a positiv nuclear Overhauser effect which exists between ortho phenyl protons and the vinyl proton of the Z isomer, the configuration of the tetrasubstituted compounds has been determined by lanthanide induced shifts. The effect of different europium coordination in the vinyl phosphorothioates and vinyl phosphates on the paramagnetic shifts is discussed.

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