Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, and The Giuaudan 4-tert-Butyl-1, l-dimethylindan was synthesized to help establish the identity of products (5-and 6-tert-butyl-1, l-dimethylindan as minor and major products, respectively) from the sulfuric acid catalyzed condensation of tert-butylbenzene and isoprene. NMR ('H and I3C) studies of these hydrocarbons and their corresponding indanones, obtained ...