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Dynamic NMR study of hindered rotation around the CN bond in thiopiperidides

✍ Scribed by Mariana Ciureanu; Victor E. Sahini; Felicia Cornea; Cornelia Cercasov; Mihai Contineanu

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
356 KB
Volume
15
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The barriers to internal rotation about the CN bond in several thiopiperidides have been determined by the NMR technique. It was found that the barrier height (Δ__G__^‡^) increases in the series cinnamoylthiopiperididem‐and p‐substituted cinnamoylthiopiperidides the barriers were shown to increase with the electron withdrawing character of the substituent in the aromatic ring.

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