Trispyrazolylborate copper complexes supported on vinylic addition polynorbornenes and their use as recyclable catalysts.
The robust vinylic addition polynorbornene skeleton (VA-PNB) has been functionalized with trispyrazolylborate ligands that coordinate to copper to give VA-PNB-Tpx-Cu(NCMe) materials. The new supported complexes have been employed as heterogeneous catalysts in several carbene and nitrene transfer reactions, showing a behavior similar to the homogeneous counterparts but also being recycled several times maintaining a high degree of activity and selectivity.
This work is a collaborative effort of the groups of A. C. Albéniz (Univ. of Valladolid, Spain) and P. J. Pérez (Univ. of Huelva, Spain).