Treatment of naphthalene-1,3-diol and naphthalene-1,7-diol with methanol containing dry hydrogen chloride at room temperature gives exclusively 3-methoxy-1-naphthol and 7-methoxy- 1-naphthol, respectively. Of the other two unsymmetrical naphthalenediols, the 1,2-isomer was unreactive and the 1,6-isomer gave a mixture of regioisomers under the same conditions. Two symmetrical diols (the 1,5- and 2,7-isomers) examined by the same procedure gave the monomethyl ethers in 60-70% yields.
在室温下,用含有干氯化氢的甲醇处理萘-1,3-二醇和萘-1,7-二醇,可分别得到 3-甲氧基-1-萘酚和 7-甲氧基-1-萘酚。在其他两种非对称萘二醇中,1,2-异构体没有反应,1,6-异构体在相同的条件下产生了摄向异构体混合物。用同样的方法研究了两种对称的二元醇(1,5- 和 2,7- 异构体),它们的单甲基醚的产率为 60-70%。