Stannylated Polynorbornenes as New Reagents for a Clean Stille Reaction
作者:Nora Carrera、Enrique Gutiérrez、Rut Benavente、M. Mar Villavieja、Ana C. Albéniz、Pablo Espinet
DOI:10.1002/chem.200800558
日期:2008.11.10
New functionalized polynorbornenes have been obtained in good yields by vinylic copolymerization of norbornene with a (norbornenyl)SnBu(2)Cl monomer, catalyzed by [Ni(C(6)F(5))(2)(SbPh(3))(2)]. Subsequent functionalization produces a wide variety of polymers with different --SnBu(2)R groups (R=aryl, vinyl, alkynyl). The polymers can be used as R-transfer reagents in Stillecouplings, thereby providing