摘要：

Crossing the seven C's: The three carbon atoms of several allenyl fragments can be incorporated into seven‐membered carbocycles by means of a Pt‐catalyzed intramolecular [4C+3C] cycloaddition with dienes (see scheme). The transformation provides a straightforward and atom‐economical entry to a variety of cycloheptane‐containing polycycles from readily available acyclic precursors. <img class="figure__image" src="https://wol-prod-cdn.literatumonline.com/cms/attachment/5b9d8607-e14b-45b3-a618-c1162171cc54/mcontent.gif" data-lg-src="https://wol-prod-cdn.literatumonline.com/cms/attachment/820fda1c-ccd4-40bd-bb7c-03dbe3ba44e6/mcontent.jpg">

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