CH3 CH3 VI11 IX X oxy-3-isopropyl-4-bromobenzene (IX) which on forming the Grignard reagent and treatment with carbon dioxide gave 1, 2-dimethoxy-3-isopropyl-4-benzoic acid (X). This acid, which is analogous to veratric acid and its homolog^,^ should and does nitrate in the open position para to the 2-methoxyl giving 1, 2-dimethoxy-3-isopropyl-5-nitro-4- benzoic acid (XI), which proved to be identical with the product of nitration of ...
