Results Since only a few of the requisite aryldialkylmethines are commercially available, literature procedures were generally followed for their preparation. Several of the hydrocarbons, namely, pt-butylcumene, isopropylmesitylene, and 5-isopropyl-m-xylene, were readily obtained by Friedel-Crafts alkylation. However, in many instances this method proved unsuitable because of the formation of isomeric mixtures which were difficult to ...
