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Conformational studies of monoterpenes. II –conformational studies of bicyclo[3.1.1]heptane derivatives by 13 C NMR
Author(s) -
Holden Collette M.,
Whittaker David
Publication year - 1975
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270070304
Subject(s) - bicyclic molecule , heptane , chemistry , stereochemistry , chemical shift , organic chemistry
The carbon‐13 spectra of seventeen bicyclo[3.1.1]‐heptane derivatives have been recorded and assigned. Study of the C‐6 and C‐7 chemical shifts permits the conformations to be assigned to the bridged chair, Y‐shaped, or bridged boat conformations. The spectrum of verbenone is anomalous and is compared to that of umbellulone recorded earlier.