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Nuclear magnetic resonance and the conformation of some derivatives of Michler's ketone

✍ Scribed by K. D. Bartle; G. Hallas; J. D. Hepworth

Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
470 KB
Volume
7
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

^1^H NMR spectra are reported for Michler's ketone and twenty of its derivatives, along with ^13^C chemical shifts for five of the compounds. ^1^H chemical shifts show only small changes with increasing substitution at the sterically hindered 2‐position. Estimates of the dihedral angle between the benzene ring and CCOC planes have been obtained from the chemical shifts of CO and 4‐C for ketones 1, 3, 5, 15 and 16. These angles are both internally consistent and very similar to dihedral angles determined by other methods for corresponding compounds in the benzophenone series.

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