Photooxidations of phenol, cyclopentadiene and citronellol with photosensitizers ionically bound at a polymeric ion exchanger

Different metal tetrasulfophthalocyanines and rose bengal were employed as photosensitizers in the photooxidation of phenol, cyclopentadiene and (S)‐(−)‐citronellol. Ionically polymer bound photosensitizers were easily obtained by the reaction of negatively charged low‐molecular‐weight phthalocyanines with the strong basic anion exchanger Amberlite® IRA 400. The activities of the low‐molecular‐weight and the polymer systems are compared. Especially immobilized phthalocyanines which exhibit the advantages of good activity, as well as stability against photobleaching, and can be used repeatedly. Copyright © 2001 John Wiley & Sons, Ltd.