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- W4353061918 abstract "Exploration of intermediates that enable chemo- and stereoselective cycloaddition reactions for the expeditious construction of fused- and bridged-ring systems continues to draw a great deal of interest from the synthetic community. Vinylcarbene intermediates, which serve as 1- or 3-carbon building blocks, have been frequently used for the construction of cyclic frameworks through the successive formation of multiple carbon–carbon or/and carbon–heteroatom bonds. Here, we present a concise strategy for the catalytic generation of cyclic dienyl gold carbene species (Au-CDC) via a selective gold-promoted diazo-enyne carbocyclization process. Following cycloadditions of these in situ formed carbene intermediates with different types of dipolarophiles are disclosed, producing a diverse array of fused and bridged skeletons with high chemo- and stereoselectivity. This method provides a tool resulting in straightforward access to ring systems with structural complexity and diversity, and is a substantial complementary protocol to existing methods relying on using open-chained vinylcarbene species. The subsequent exploration of these generated cyclopentadiene motifs with dipolarophiles in accessing targets of polycyclic structures can further increase this rings-per-operation count, leading conceptually to the Au-CDC as a key bridge capable of connecting back-to-back cycloadditions." @default.
- W4353061918 created "2023-03-23" @default.
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- W4353061918 date "2023-03-22" @default.
- W4353061918 modified "2023-10-16" @default.
- W4353061918 title "Generation and Utility of Cyclic Dienyl Gold Carbene Intermediates" @default.
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- W4353061918 doi "https://doi.org/10.1021/acscatal.2c06188" @default.
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