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Synthesis of unsymmetrical methylene derivatives of benzopyran-4-ones from mannich bases

✍ Scribed by Mauro Mazzei; Ramona Dondero; Alessandro Balbi; Gian Maria Bonora

Publisher: Journal of Heterocyclic Chemistry
Year: 2001
Tongue: English
Weight: 43 KB
Volume: 38
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570380232

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✦ Synopsis

Abstract

The formation of methylene‐bis derivatives of benzopyran‐4‐ones from their Mannich bases was studied. On these grounds, unsymmetrical methylene derivatives have been synthesized by reacting Mannich bases of benzopyran‐4‐ones with structurally related compounds lacking the dialkylaminomethyl group.

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