Intermolecular annulation of enynes and propargyl esters to selectively produce styrenes or fluorenes is reported. The divergent arene syntheses involve a Au-catalyzed, two-pot, multistep process proceeding by cis-diastereoselective cyclopropanation, cycloisomerization, and, finally, annulation or elimination.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2995287 | PMC |
| http://dx.doi.org/10.1021/ja710990d | DOI Listing |
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