Iron-catalyzed boration of allylic alcohols with H<sub>3</sub>BO<sub>3</sub> as an additive

<p>A method for the synthesis of allylboronates by iron-catalyzed boration of allylic alcohols with H<sub>3</sub>BO<sub>3</sub> as an additive is developed. The introduction of H<sub>3</sub>BO<sub>3</sub> promotes the cleavage of C‒O bond in allylic alcohols obviously. Functional groups, such as fluoro, chloro, bromo, alkyl, and alkoxy, are tolerated well. Thus, various allylboronates are obtained in acceptable yield.</p>