ChemInform Abstract: Gold‐Catalyzed Reaction of Enynols by a Dimerization—Fragmentation Process: An Expeditious Assembly of Enyne Molecular Architecture.

Abstract

Polyphenylalkyne derivatives Q 0750Gold-Catalyzed Reaction of Enynols by a Dimerization-Fragmentation Process: An Expeditious Assembly of Enyne Molecular Architecture. -A novel intermolecular condensation of 1,3,5-triarylenynols (I) catalyzed by gold as a Lewis acid, which involves a dimerization-fragmentation sequence, is described. For derivatives (III), a Au-catalyzed homocoupling-[4 + 2] cycloaddition-dehydrogenation tandem reaction is observed. Preliminary experiments show that the tandem reaction product (IVb) can be used as a fluorimetric probe for mercury.