[CH3:1][C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[C:6]([CH3:11])[CH:5]=[CH:4][C:3]=1[OH:12].[CH3:13]OS(C1C=CC(C)=CC=1)(=O)=O.C([O-])([O-])=O.[K+].[K+]>CC(C)=O>[CH3:1][C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[C:6]([CH3:11])[CH:5]=[CH:4][C:3]=1[O:12][CH3:13]A mixture of 32.12 grams of 2,4-dimethyl-3-nitrophenol, 35.78 grams of methyltosylate and 28.5 grams of anhydrous K2CO3 in 200 ml of acetone is heated to reflux for 12 hours. The reaction mixture is filtered leaving a tan solid. The filtrate is concentrated in vacuo. The concentrated filtrate is taken up in ethyl acetate and washed with 10% aqueous sodium hydroxide solution and saturated aqueous sodium chloride. The remaining ethyl acetate layer is dried, filtered and concentrated in vacuo to give a dark oil which is distilled (T=80°-87° C./50μ) to give 30.95 grams of a yellow solid which is recrystallized from absolute ethanol, M.P. 53°-55° C.
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