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  • Title: Highly selective synthesis of tetra-substituted furans and cyclopropenes: copper(I)-catalyzed formal cycloadditions of internal aryl alkynes and diazoacetates.
    Author: Swenson AK, Higgins KE, Brewer MG, Brennessel WW, Coleman MG.
    Journal: Org Biomol Chem; 2012 Oct 07; 10(37):7483-6. PubMed ID: 22903589.
    Abstract:
    A convenient Cu(I)-catalyzed cycloaddition of electron rich internal aryl alkynes and diazoacetates was discovered for the chemoselective and regioselective synthesis of tetra-substituted furans and cyclopropenes in moderate isolated yields (18-67%), and alkyne conversion (29-73%).
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