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Structural assignment of monothiocarbonohydrazones by 1H NMR spectroscopy

✍ Scribed by G. Rajendran; Sampat R. Jain

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
416 KB
Volume
22
Category
Article
ISSN
0749-1581

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✦ Synopsis

Analysis of the 'H NMR spectra of several monothiocsrbonohydraones, some of them synthesized for the first time, shows that they exist as two structural isomers. Whereas, in general, the derivatives of aromatic aldehydes conform to a linear structure, the aliphatic carbonyl derivatives conform to heterocyclic or linear structures, depending on the size of the substituent groups. This dual behaviour is explained in terms of extended conjugation and steric hindrance.

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