[GRAPHICS]
Highly cross-linked macroporous polymers are excellent supports for heterog
enizing rhodium alkene hydrogenation and hydroboration catalysts. The perma
nent pore structure of the support enables high conversions and excellent y
ields with minimal workup (filtering). These heterogenized catalysts can be
reused, and due to the permanent pore structure, they function in a broad
range of solvents including polar protic. Control experiments reveal that c
atalysis occurs exclusively within the polymer matrix, and not due to leach
ed catalyst.