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Gold-Catalyzed Intramolecular [3 + 2]-Cycloaddition of Arenyne-Yne Functionalities
September 2006
September 2006
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Abstract
We report a new efficient intramolecular [3 + 2]-cycloaddition of unactivated arenyne
(or enyne)-yne functionalities, catalyzed mainly by the AuPPh3SbF6 complex (2 mol
%) under ambient conditions. The value of this cyclization is reflected by its applicability
to a wide range of diyne substrates bearing various functional groups.