sp3 Bis‐Organometallic Reagents via Catalytic 1,1‐Difunctionalization of Unactivated Olefins

A catalytic 1,1‐difunctionalization of unactivated olefins en route to sp3 bis‐organometallic B,B(Si)‐reagents is described. The protocol is characterized by exceptional reaction rates, mild conditions, wide scope, and exquisite selectivity pattern, constituting a new platform to access sp3 bis‐organometallics.