Herein we present the synthesis and the photochemical behavior of several new hemicarcerands containing anthracene units as photoactive species. By means of NMR investigations of compounds 9 and 11 the dimerization mode was revealed as a 9,10-9′,10′-dimerization, classically known from anthracene. Nevertheless only compound 11 could be converted to the opened form upon irradiation with 300 nm. Reopening of compounds 9 and 10 could not be achieved so far either by heating or by irradiation.
在此,我们介绍了几种含有
蒽单元作为光活性物种的新型半
氯化石蜡的合成和光
化学行为。通过对化合物 9 和 11 的核磁共振研究,我们发现其二聚化模式为 9,10-9′,10′-二聚化,这在
蒽中是众所周知的。然而,只有化合物 11 可以在 300 纳米波长的照射下转化为开放形式。化合物 9 和 10 至今无法通过加热或辐照重新开放。