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13 C NMR spectra of aryl‐substituted spirocyclopropanes
Author(s) -
AbdelWahab A.,
Doss S. H.,
Dürr H.,
Spang P.
Publication year - 1985
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260230913
Subject(s) - chemistry , cyclopropane , cycloheptene , chemical shift , aryl , nmr spectra database , ring (chemistry) , carbon 13 nmr , spectral line , stereochemistry , medicinal chemistry , computational chemistry , organic chemistry , alkyl , astronomy , physics
The 13 C NMR spectra of 2‐arylspiro[cyclopropane‐1,9′‐thioxanthene S , S ‐dioxides], 1–5, and 2′‐aryl‐spiro[10,11‐dihydro‐5 H ‐dibenzo[ a , d ]cycloheptene‐5,1′‐cycyclopropanes], 6–9, are described, and the effects of substituents are discussed. The relationship between the 13 C shifts and the Hammett σ constants of substituents on the phenyl ring is not linear for 1–5. For 6–9 the chemical shifts of the cyclopropane carbons (C‐2′ and C‐3′) correlate reasonably well with electron density.