Hetera-<i>p</i>-carbophanes. I. Hetera-<i>p</i>-carbophanes Containing Two Amide Groups
作者:Kazuhiko Sakamoto、Michinori \={O}ki
DOI:10.1246/bcsj.46.270
日期:1973.1
Several hetera-p-carbophanes containing two amide groups in the ansa chain were synthesized by the highdilution method. Those which have shorter ansa chains than 15 atoms show no sign of the internal rotation of the benzene ring, even at higher temperatures, whereas that which has the ansa chain of 16 atoms shows no sign of the freezing of the motion, even at lower temperatures. The infrared spectra of these compounds suggest that the amide groups in these compounds exist as the s-cis conformation.
通过高稀释法合成了多个含有两个酰胺基团的链节式杂环-p-卡铪属化合物。链节长度小于15原子的化合物即使在较高温度下也不显示苯环内旋转迹象,而链节长度为16原子的化合物即使在较低温度下也不显示运动冻结迹象。这些化合物的红外光谱表明,其中的酰胺基团以s-顺式构象存在。