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Analysis of the 1H n.m.r. spectrum of 4-methyl-1,3-oxathiolane. An interestingly coupled ABXM3-case

✍ Scribed by Kalevi Pihlaja; Raimo Keskinen

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
176 KB
Volume
9
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The 220 MHz proton magnetic resonance spectrum of 4‐methyl‐1,3‐oxathiolane was recorded and analysed. The methyl and ethanic protons form an ABXM~3~ system, the analysis of which was carried out through several ‘trial‐and‐error’ attempts. This part of the spectrum is an interesting example of second‐order effects which, in the past, have been mistakenly associated with ‘virtual coupling’. The results are compared with those presented earlier for several alkyl substituted 4‐methyl‐1,3‐oxathiolanes.

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