Solvolysis of 1, 4-dimethyl-4-nitrocyclohexa-2, 5-dien-1-ol in mixed aqueous organic solvents gives the diastereomers of 1, 4-dimethylcyclohexa-2, 5-diene-1, 4-diol, 1, 4- dimethylcyclohexa-3, 5-diene-1, 2-diol, 2-nitro-p-xylene, 2, 4-dimethylphenol (all derived from the title cation, itself formed by ionization of the nitro group as nitrite), and 2, 5- dimethylphenol. In aqueous methanol the diastereomers of 4-methoxy-1, 4- ...