One-Pot Synthesis of Internal Conjugated (Z)-Enynyltrimethylsilanes Possessing Aryl, Cycloalkenyl, (E)- or (Z)-Alk-1-enyl Moieties on the sp Carbon Atom via Two Types of Cross-Coupling Reaction
Under very mild conditions, functionalized benzoxaborole derivatives were prepared in good to excellent yields via a palladium-catalyzed Miyaura borylation reaction of readily available unprotected o-bromobenzylalcohols, and bis(pinacolato)diboron (B2pin2) without the assistance of an acid.