One-Pot Syntheses of Methyl<i>p</i>- and<i>o</i>-Hydroxydithiobenzoates from Phenol Ethers
作者:R. Karl Dieter、Ananda G. Lugade
DOI:10.1055/s-1988-27549
日期:——
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。