Access to Polycyclic Derivatives by Triflate-Catalyzed Intramolecular Hydroarylation
作者:Bastien Cacciuttolo、Sophie Poulain-Martini、Fabien Fontaine-Vive、Mahmoud Ali Hussein Abdo、Hussein El-Kashef、Elisabet Duñach
DOI:10.1002/ejoc.201402972
日期:2014.11
An efficient and versatile synthesis of indane, tetralin and benzosuberan derivatives has been developed; the synthesis starts from nonactivated aromatic compounds bearing unsaturated side chains and is a bismuth(III) or indium(III) trifluoromethanesulfonate-catalysed atom-economic process. A variety of polycyclic compounds have been isolated in high yields. Lactonisation could be observed for esters
Nonactivated trienes and aryltrienes were cyclized into polycyclic compounds in good to excellent yields under bismuth triflate catalysis in a biomimetic fashion. The reaction showed broad applicability and allowed for the formation of functionalized bicyclic to tetracyclic structures from simple precursors in one pot. For some specific substrates, the cyclization was followed by a methyl shift as encountered in terpenoid biosynthesis.