9-(4-甲基苯氧基)-并四苯[5,6-bc]吡喃-2,8-二酮的合成及其紫外光谱研究

Synthesis and UV Spectra of 9-(4-Methylphenoxy)-naphthaceno[5,6-bc]pyran-2,8-dione

以6-氯-5,12-萘并萘醌为起始原料,合成了9-(4-甲基苯氧基)-并四苯[5,6-bc]吡喃-2,8-二酮,通过元素分析、IR、1H NMR和EIMS对其结构进行了表征。研究表明:在365 nm紫外光照射下,9-(4-甲基苯氧基)-并四苯[5,6-bc]吡喃-2,8-二酮可以发生类似于苯氧基萘并萘醌的光异构化反应,trans-form的最大吸收峰出现在422 nm处,而ana-form在490 nm和524 nm处显示出特征双峰。

9-（4-Methylphenoxy）-naphthaceno[5,6-bc]pyran-2,8-dione was synthesized using 6-chloro-5,12-naphthacenequinone as the starting material and its structure was confirmed using elemental analysis and the IR, IH NMR and MS spectra. The compound exhibits the similar photoisomerization performance with that of phenoxynaphthacenequinone due to light irradiation （365 nm）. The trans-form had an absorption maximum at 422nm, while the ana-form had two large absorption maxima at 490 nm and 524 nm.