Photochemical and Thermal Transformations of 1-Aryloxy-2- and 4-Azidoanthraquinones
作者:Lubov S. Klimenko、Elena A. Pritchina、Nina P. Gritsan
DOI:10.1002/chem.200390188
日期:2003.4.4
the photolysis and thermolysis of 2-azido-1-aryloxyanthraquinones (3) is proposed and supported by the results from semiempirical calculations. A relative contribution of the primary photoreactions-azido group dissociation and aryl group migration was estimated to be 3:1. Photolysis and thermolysis of 4-azido-1-(p-tert-butylphenoxy)-9,10-anthraquinone (8) gave 3-(p-tert-butylphenoxy)-anthra[1,9-cd]-izoxazole-6-one
本文描述了1-芳氧基-2-叠氮蒽蒽醌(3)在苯中的光解,得到1-羟基-2-芳基氨基蒽醌(4)和两种类型的5H-萘[2,3-c]苯恶嗪-8,13- diones(5和6)。3的热解仅产生苯恶嗪5中的一个,少量产生4。另一方面,在苯酚存在下3的热解产生吩恶嗪6作为主要产物。提出了2-叠氮基-1-芳氧基蒽醌(3)的光解和热解机理,并得到了半经验计算结果的支持。初级光反应-叠氮基团离解和芳基团迁移的相对贡献估计为3:1。对4-叠氮基-1-(对-叔丁基苯氧基)-9,10-蒽醌(8)进行光解和热解,得到3-(对-叔丁基苯氧基)-蒽[1,9-cd] -izoxazole-6-一(9)作为唯一产品。