1, 1, 4, 4-Tetramethyltetralone (I) was converted by oxidative procedures into o-phenylene- diisobutyric acid (III). Hydride reduction of the dimethyl ester of III yielded β, β'-dihydroxy-o-di- t-butylbenzene (IV). The ditosylate of IV was converted by hydride reduction into o-di-t- butylbenzene (VI)(44%) together with rearrangement products. Ultraviolet spectral evidence indicated a slight distortion of the benzene ring in VI and its various side chain derivatives. ...