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• W2012003144 abstract "With gold and platinum catalysts, cis-4,6-dien-1-yn-3-ols undergo cycloisomerizations that enable structural reorganization of cyclized products chemoselectively. The AuCl3-catalyzed cyclizations of 6-substituted cis-4,6-dien-1-yn-3-ols proceeded via a 6-exo-dig pathway to give allyl cations, which subsequently undergo a pinacol rearrangement to produce reorganized cyclopentenyl aldehyde products. Using chiral alcohol substrates, such cyclizations proceed with reasonable chirality transfer. In the PtCl2-catalyzed cyclization of 7,7-disubstituted cis-4,6-dien-1-yn-3-ols, we obtained exclusively either bicyclo[4.1.0]heptenones or reorganized styrene products with varied substrate structures. On the basis of the chemoselectivity/structure relationship, we propose that bicyclo[4.1.0]heptenone products result from 6-endo-dig cyclization, whereas reorganized styrene products are derived from the 5-exo-dig pathway. This proposed mechanism is supported by theoretic calculations." @default.
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• W2012003144 date "2007-11-20" @default.
• W2012003144 modified "2023-10-18" @default.
• W2012003144 title "The Skeletal Rearrangement of Gold- and Platinum-Catalyzed Cycloisomerization of <i>cis</i>-4,6-Dien-1-yn-3-ols: Pinacol Rearrangement and Formation of Bicyclo[4.1.0]heptenone and Reorganized Styrene Derivatives" @default.
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• W2012003144 doi "https://doi.org/10.1021/ja076175r" @default.
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