Ni‐Catalyzed Synthesis of Multisubstituted Allenes via Reductive Cross‐Coupling of Propargylic Acetates with Chlorohydrosilanes

This paper introduces an innovative strategy for the synthesis of multisubstituted allenes via nickel‐catalyzed reductive cross‐coupling reactions. The approach utilizes propargyl acetates and chlorosilanes to produce a variety of silyl‐substituted allenes. The reaction conditions are notably mild, and the process is characterized by high chemo‐ and regioselectivity, as well as an impressive substrate scope. Furthermore, the method can be readily extended to the use of chlorogermane and chlorostannane, facilitating the synthesis of germanium or stannium‐substituted allenes. This research not only offers a valuable strategy for the preparation of multisubstituted allenes but also significantly broadens the synthetic repertoire for the construction of highly functionalized molecules.