Cu-Catalyzed Borylative and Silylative Transformations of Allenes: Use of β-Functionalized Allyl Copper Intermediates in Organic Synthesis

Herein, copper-catalyzed borylative and silylative transformations of allenes using borylcopper or silylcopper as the active catalytic species are described. First, the synthesis and characterization of borylcopper and silylcopper complexes are briefly introduced. Next, the borylative transformations of allenes are summarized including hydro­boration, carboboration, and borylative allylation of carbonyl compounds. We next deal with the silylative transformations of allenes such as hydrosilylation, carbosilylation, and silylative allylation of carbonyl compounds. 1 Introduction 2 Synthesis of Borylcopper and Silylcopper Complexes 3 Borylative Transformations 4 Silylative Transformations 5 Conclusions and Future Outlook