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The 1H, 13C and 31P NMR spectra of EZ pairs of some phosphorus substituted alkenes (1981)

Duncan, Mark ; Gallagher, Michael J.

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 15 (1981), S. 37-42

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ISSN: 0030-4921

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The olefins Ph2P(X)CH=CHR [X=lone pair, O, S, Ch3I; R=Ch3, ph, P(X)ph2] have been prepared and their 1H, 13C and 31P NMR spectra measured. trans 3J[P(IV)C] (range 18.3-25.7 Hz) is greater than cis 3J[P(IV)C] (range 6.9-11 Hz) but this relationship does not hold for P(III) compounds. In the 31P spectra the E isomer absorbs to higher field than the Z isomer for P(III) and P(IV) compounds. The 1H data are in accord with previous results; average substituent shielding coefficients for ph2P(X) substituted alkenes are reported.

Additional Material: 2 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/mrc.1270150110

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