A Short, Atom‐Economical Entry to Tetrahydroxanthenones

Abstract

A reaction that takes to water: The domino Michael addition/aldol condensation of salicylic aldehydes like 1 as the nucleophile and 2-cyclohexen-1-one (2) as the Michael acceptor provides 2,3,4,4a-tetrahydroxanthen-1-ones such as 3 in good yields. DABCO=1,4-diazabicyclo[2.2.2]octane. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2004/z52154_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.