四苯基卟啉光敏氧化反应的取代基效应

四苯基卟啉光敏氧化反应的取代基效应 SUBSTITUENT YGROUPY EFFECTS ON PROPERTIES OF PHOTOSENSITIVE OXIDATION FOR TETRAPHENYLPORPHINES 吴萱阶 Wu Xuanjie Chen Zhengping Jiang Zhangxing 1 first-author 陈彰评 1 姜中兴 1 武汉大学化学系 武汉大学化学系 Department of chemistry,wuhan University Department of chemistry,wuhan University 合成了不同中位取代四苯基卟啉,并对其光敏氧化 DDD 的反应进行了研究.结果表明:取代基影响光敏氧化反应,对推电子基团和拉电子基团来说,其光敏氧化反应速率常数分别符合Hammett 关系式,且随着取代基推电子能力或拉电子的能力的增加而降低.对于卤代四苯基卟啉还存在着重原子效应. A series of meso-substituted tetraphenylporphines were synthesixed and the rate constants of hotosensitive oxidation of DDD for these porphyrins were measured.The rate constants correlated with Hammett constants of the substituents for both electron withdrawing and electron donating substituents.The results also showed heavy atom effects. 卟啉 光敏氧化 取代基效应 porphyrin photo-oxidation substituent group effects O626.13 1993-04-01 2021-04-01 4