RARE EARTH SOLID SUPERACID CATALYZED FRIEDEL-CRAFTS ACYLATION OF FERROCENE

The Friedel-Crafts acylation of ferrocene catalyzed by a new type of catalyst of rare-earth solid superacid sulfated zirconia SZR(3+) was developed. Comparison of catalytic activities between different solid acid catalysts is presented. The catalyst, sulfated zirconia ytterbium SZNYb(3+), showed interesting catalytic properties for preparation of acylferrocenes. Furthermore, the catalyst could be regenerated and reused in succession after simple filtration.