✦ LIBER ✦

The NMR spectrum and conformation of 2,3-difluoropropionic acid ethyl ester

✍ Scribed by G. Hägele; R. K. Harris; P. Sartori

Book ID: 102950612
Publisher: John Wiley and Sons
Year: 1971
Tongue: English
Weight: 541 KB
Volume: 3
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270030409

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✦ Synopsis

The 'H and ISF NMR spectra of the CH,FCHF group in FCH,CHFCO,C,H, were analysed on the basis of an ABCXY spin system. The non-equivalence of the methylene protons is discussed in terms of rotational isomerism. It is concluded that the dominant rotamer is probably considerably distorted from a perfectly staggered orientation. The variation of 3JI.rE with substituent electronegativity is reviewed.

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