15781-65-4Relevant articles and documents
Synthesis of tetra- and octahydroxanthene derivatives by the condensation of dimedone with aromatic aldehydes
Pyrko
, p. 635 - 645 (2007/10/03)
The reaction of dimedone with salicyl and 2-hydroxy-1-naphthoyl aldehydes gave derivatives of tetrahydroxanthene and tetrahydrobenzo[a]xanthene and not aldimedone as occurs in condensations with other aldehydes. Derivatives of decahydroacridine were obtained by reaction of the tetrahydroxanthene derivatives with methyl-and ethylamine. Tetrahydro- and octahydroxanthene derivatives were obtained from the reaction of acetylsalicylaldehyde with dimedone in acetic anhydride. The structures of the ketoenol forms of the products containing a β-ketoenol unit were determined by 1H and 13C NMR spectroscopy, and the mechanism of their interconversion is discussed. 1997 Plenum Publishing Corporation.
