2-ethanedithiol in high yields. In contrast, the simi lar reactions of the trimers with 1,3-propanedithiol instead of 1,2-ethanedithiol gave 1:1 macrocycles, hexahomodithiacalix[3]arenes, in good yields. Homoazacalixarenes were also prepared from the analogous reactions using piperazines. These macrocycles adopt a cone-like form as a preferable conformation in solution.
从双(
氯甲基)
苯酚甲醛三聚体与
1,2-乙二硫醇的2:2环化反应中,可以方便地制备出十ahomoththiacalix [6]
芳烃。相反,三聚体与1,3-丙二
硫酚而不是1,2-乙二
硫醇的相似反应产生了1:1大环,即六高二
硫杂杯[3]
芳烃,收率很高。还使用
哌嗪从类似的反应中制备了高氮杂二氮杂
芳烃。这些大环化合物采用锥状形式作为溶液中的优选构象。