In search of new possibilities for rendering catalysts soluble in fluorous
solvents, the preparation of a sodium derivative of tetrakis {3,5-bis(perfl
uorohexyl)phenyl} borate, a new and highly fluorous anion, is described. Th
is weakly coordinating anion exhibits substantial affinity for perfluorinat
ed solvents and is therefore expected to make a broad range of cationic tra
nsition-metal catalysts compatible with fluorous biphasic recycling techniq
ues. (C) 2001 Elsevier Science Ltd. All rights reserved.