Synthesis of 6,21-dioxo-5,22-diaza[10.10]paracyclophane and its structural characteristics
作者:Hiroki Kondo、Hiroshi Okamoto、Jun-Ichi Kikuchi、Junzo Sunamoto
DOI:10.1039/p19810003125
日期:——
A novel paracyclophane, 6,21-dioxo-5,22-diaza[10.10]paracyclophane (4) has been synthesized by a condensation of 5,5′-p-phenylenebis (valeroyl chloride)(5) with 4,4′-p-phenylenebis(butylamine)(3) by a high dilution method. It has been characterized by means of u.v., i.r., and n.m.r. spectroscopy. The two amide bonds in compound (4) were found to assume the s-trans-geometry. No significant transannular
通过将5,5'-对亚苯基(戊酰氯)(5)与4,4'-缩合合成了一种新型的对环烷,6,21-二氧杂-5,22-二氮杂[10.10]对环烷(4)。对苯二双(丁胺)(3)的高稀释法。它已经通过紫外,红外和核磁共振光谱进行了表征。发现化合物(4)中的两个酰胺键呈s-反式-几何构型。在两个苯环之间未观察到明显的跨环相互作用。冷却后,通过将nmr环质子信号分裂为双峰,可以证明苯环的旋转受到阻碍。在30±5°C的聚结温度下,该旋转受阻的活化能评估为0.9 kcal / mol。