A rapid intramolecular imino Diels-Alder reaction of aminoanthraquinones with citronellal or prenylated salicylaldehydes: Substituent effect on changing the reaction pathway from Diels-Alder to ene-type cyclization
A rapid intramolecular imino Diels-Alder reaction of aminoanthraquinones with citronellal or prenylated salicylaldehydes: Substituent effect on changing the reaction pathway from Diels-Alder to ene-type cyclization
No Thumbnail Available
Date
2007-08-16
Authors
Gaddam, Vikram
Meesala, Ramu
Nagarajan, Rajagopal
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The reaction of 1-aminoanthraquinone with citronellal or substituted prenylated salicylaldehyde catalyzed by triphenylphosphonium perchlorate (TPPP) is reported. The nature of the substituents in salicylaldehyde changes the reaction pathway from Diels-Alder to ene-type cyclization. © Georg Thieme Verlag Stuttgart.
Description
Keywords
Aminoanthraquinones,
Chromanoquinolonaphthaquinones,
Cycloaddition,
Ene-type cyclization,
Naphthoacridine-5,14-dione
Citation
Synthesis