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Carbon-13 NMR spectra of methylated cyclobutanes and ethyl cyclobutane-carboxylates

✍ Scribed by Ernest L. Eliel; K. Michal Pietrusiewicz

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 334 KB
Volume: 13
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270130308

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✦ Synopsis

Abstract

The ^13^C NMR spectra of cyclobutane and seven methylated homologs and of ethyl cyclobutanecarboxylate and five isomeric diethyl cyclobutanedicarboxylates are reported and substituent parameters for methyl groups in methylcyclobutanes are calculated. Of note is a sizeable and nearly configuration‐independent upfield shifting γ‐effect.

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