Methyl p- and o-hydroxydithiobenzoates were prepared regiospecifically in a one-pot procedure from phenol methyl- and methoxymethyl, ethers, respectively. The p-hydroxy compounds were prepared by treatment of the methyl ethers with carbon disulfide, methyl iodide, and aluminum chloride. The second procedure involves ortho-metallation, carbon disulfide dithiocarboxylation, sulfur alkylation with methyl iodide, and in situ phenol deprotection with aluminum chloride/methyl iodide.
对羟基
二硫代苯甲酸甲酯的p型和o型异构体分别通过一种一步法反应从
苯酚的甲基醚和甲氧基甲基醚中具有选择性地制备得到。p型对羟基化合物是通过甲基醚与
二硫化碳、
碘甲烷和
氯化铝的处理来制备的。第二种方法包括邻位
金属化、
二硫化碳二
硫代
羧酸化、
硫的烷基化与
碘甲烷以及原位
苯酚的去保护与
氯化铝/
碘甲烷反应。