申論題

 本化合物不溶於水，亦不溶於氫氧化鈉水溶液，但是可溶於 10%鹽酸水溶液，當 其鹽酸水溶液用氫氧化鈉中和後，可回復此化合物。（This compound is insoluble in water and aqueous NaOH, but dissolves in 10% HCl. When its solution in HCl is neutralized with NaOH, compound is recovered unchanged.）¹H-NMR(δ):3.84(s,3H), 4.18(s,2H),7.60(d,2H),8.70(d,2H).