Cellulosic CuI Nanoparticles as a Heterogeneous, Recyclable Catalyst for the Borylation of α,β-Unsaturated Acceptors in Aqueous Media

Abstract

We have demonstrated that cellulosic CuI nanoparticles could perform as an efficient heterogeneous catalyst for the synthesis of useful organoboron compounds. Desired β-borylation products were all obtained in good to excellent yields under mild conditions. This catalyst could be recovered easily and still work effectively in six runs. Notably, asymmetric synthesis of organoboron compounds was accomplished by applying a chiral phosphine ligand. This newly developed protocol provides an efficient and sustainable pathway for the formation of C-B bonds and largely extends the applied range of cellulose. Asymmetric and efficient synthesis of organoboron compounds was accomplished by cellulosic CuI nanoparticles combining with a chiral phosphine ligand. This newly reported strategy provides a green and sustainable method for the construction of C–B bonds and largely extends the applied range of cellulose.