Facile Synthesis of Stable Haloalkylborons via Atom Transfer Radical Addition Using Sterically Hindered Vinyl‐Oxazaborolidinone
α‑Haloalkylboron compounds are valuable ambiphilic synthons, but the conventional ATRA reaction using vinyl‐Bpin often gives products that are unstable and difficult to isolate. In this study, we developed a copper‑catalyzed ATRA reaction using a sterically bulky protecting group, “OxB(oxazaborolidinone)”. OxB sterical...