A study was made of the products from alkylation of p-xylene and mesitylene with n-propyl and isopropyl halides with aluminum halide catalysts at different temperatures. At low temperatures p-xylene and n-propyl chloride gave 737, 2-n-propyl-p-xylene and 277, 2- isopropyl-p-xylene; at room temperature and above an isomer resulting from methyl reorientation, 5-isopropyl-m-xylene, was produced. p-Xylene and isopropyl chloride gave ...