Journal of the Chinese Chemical Society, 2000, 47, 1243-1246:
Envirocats, as Novel Solid-Supported Catalysts for Friedel-Crafts AcylationBabasaheb P. Bandgar* and Suhas P. Kasture
Organic Chemistry Research Lab., School of Chemical Sciences, Swami Ramanand,
TeerMarathwada University, Vishnupuri, Nanded-431606, Maharashtra, India
The Friedel-Crafts acylation reactions of substituted benzenes with acid chloride or anhydrides proceeded smoothly in the presence of a catalytic amount of novel solid-supported reagents such as EPZG, EPZ10, EPIC and EPZE. These catalysts are reusable and environmentally friendly.
Full text :
http://www.sinica.edu.tw/~ccswww/zj-OR-2000-P1243.PDF
"ENVIROCATS (EVC's) are an environmentally benign, commercially viable alternative to conventional Friedel-Crafts, Bronsted acid and oxidation catalysts. "
http://www.contract-chemicals.com/envirocats/default.html