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  • Title: Gold-catalyzed annulation/fragmentation: formation of free gold carbenes by retro-cyclopropanation.
    Author: Solorio-Alvarado CR, Echavarren AM.
    Journal: J Am Chem Soc; 2010 Sep 01; 132(34):11881-3. PubMed ID: 20698529.
    Abstract:
    The gold(I)-catalyzed cyclization of 1-(prop-2-yn-1-yl)-2-alkenylbenzenes substituted at the benzylic position with OR groups gives 1,3-disubstituted naphthalenes with concomitant fragmentation of the alkene. One of these annulations proceeds by a retro-cyclopropanation that leads to free gold(I) carbenes.
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