Friedel-Crafts alkylation of benzene and ethylbenzene with butyl halides ha
s been investigated in the presence of iron-exchanged zeolites. The catalys
ts showed high conversions and selectivity for monoalkylated products with
tertiary and secondary halides under mild reaction conditions (45-60 degree
sC). Alkylation of ethylbenzene with 2-chlorobutane can be achieved in 99%
yield and 100% selectivity to the monoalkylated product.