Intramolecular gold(III) catalysed Diels-Alder reaction of 1-(2-furyl)-hex-1-en-5-yn-3-ol derivatives: a short and generalised route for the synthesis of hydroxyphenanthrene derivatives

Gold(III) catalysed intramolecular Diels-Alder reaction of various 1-(2-furyI)-hex-1-en-5-yn-3-ol derivatives has been studied to synthesise hydroxyphenanthrenes and other polynuclear aromatic hydroxyl compounds. The required precursors were synthesised by indium mediated propargylation of suitable beta-furyl-alpha,beta-unsaturated aldehydes. (C) 2012 Elsevier Ltd. All rights reserved.