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ChemInform Abstract: Cyclic Enaminoketones in the Nenitzescu Reaction.

✍ Scribed by V. M. LYUBCHANSKAYA; L. M. ALEKSEEVA; V. G. GRANIK

Publisher
John Wiley and Sons
Year
2010
Weight
37 KB
Volume
29
Category
Article
ISSN
0931-7597

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✦ Synopsis

Cyclic Enaminoketones in the Nenitzescu Reaction.

-The Nenitzescu reaction of cyclic enaminoketone (I) with benzoquinones proceeds via two different directions affording dibenzofuran derivatives (III) and spiro-compounds (IV). The reaction outcome depends obviously on the structure of the enamine employed. Hydrolysis of the spiro-compounds (IV) gives dibenzofuranone (V), which prove to be convenient synthons for the formation of Schiff bases [cf. (VII), (IX)] and benzofuroindazoles [cf. (X)]. -(LYUBCHANSKAYA, V. M.;

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