?DEVELOPMENT OF CATALYST FROM NATURAL CLAYS FOR FRIEDEL CRAFTS ALKY- LATION AND NEW SYNTHESIS OF 9,10 DIHYDROANTHRACENE

Abstract

Catalytic activityofthenaturalkaoliniticclaysofPakistancontainingtransitionmetals(FeandTi) hasbeenexamined for
the synthesis of 9, 10 dihydroanthracene [I]. The chemical composition of these clays has been determined with and
without activation andXRF analysis hasbeencarriedout. Catalyticactivityoftheseclayshasalso beenevaluated for the
synthesis of 9, 10dihydroanthracene [I] of low temperature (60-100°C),This method has been standardised, which is a
simple method as compared to the methods reported in the literature, The benzylation of phenol with benzyl chloride,
resulting in the [ormation of ortho [lI]and para [Ill] hydroxydiphenyl methaneproceeds very smoothly in the water bath
to yield 100%of the product. Clays containing (Ti) and Fe) are most effective for the alkylation with benzyl chloride,
Leachingofalkalinecationsresultsinthegenerationoflarge amountoftransitionmetalcations,This improvesthecatalytic
effect of the acid treated clays,