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17O NMR studies on 4- and 4′-substituted chalcones and p-substituted β-nitrostyrenes

✍ Scribed by D.W. Boykin; A.L. Baumstark; P. Balakrishnan; A. Perjéssy; P. Hrnc̃iar


Book ID
103905603
Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
432 KB
Volume
40
Category
Article
ISSN
1386-1425

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The 1H and 13C NMR spectra of 4-substituted phenylthiol acetates, benzoates and cinnamates and the 17O NMR spectra of a few thiol acetates were measured. The 13C chemical shifts of C-1 of the thiol esters when correlated with appropriate substituent-induced chemical shifts (SCS) of monosubstituted b

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## Abstract The ^17^O NMR chemical shift data for a series of substituted benzoquinones and α,β‐unsaturated cyclic ketones in acetonitrile at 75°C are reported. In general, for the unsymmetrically substituted quinones two signals were observed, the assignments of which were made by ^17^O enrichment