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NMR spectroscopic elucidation of the structure and stereochemistry of tricyclic 3-styrylpyrazolines

✍ Scribed by Gábor Tóth; András Simon; Attila Jenei; József Jekő; Albert Lévai

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
130 KB
Volume
46
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Diastereomeric mixtures of tricyclic 3‐styrylpyrazolines have been prepared by the reaction of 3‐cynnamylidenechroman‐4‐ones and their 1‐thio analogs with hydrazine in hot acetic acid or propionic acid solutions. The diastereomeric mixtures were separated by column chromatography to obtain the pure diastereomers. The elucidation of their structure and stereochemistry and complete ^1^H and ^13^C assignments have been performed by a combination of various one‐ and two‐dimensional NMR experiments. Copyright © 2008 John Wiley & Sons, Ltd.

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