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二苯基卡宾反应性的取代基效应
Substituent Effect on Reactivity of Triplet Diphenylcarbenes
【摘要】 用激光闪光光解法对室温溶液中产生的三线态二苯基卡宾进行了直接观察,并通过对产生的三线态二苯基卡宾寿命的测定以及与氧气反应速率常数的考察,就邻位及对位的取代基效应进行了初步探讨.
【Abstract】 A series of triplet diphenylcarbenes having substituents at the para - or ortho - positions have been generated by photolysis of the corresponding diphenyldiazomethanes at room temperature and their reactivities have been studied by laser flash photolysis technique, which revealed interesting substituent effects on the stabilities as well as the reactivity toward oxygen.
【关键词】 三线态卡宾;
激光闪光光解法;
取代基效应;
【Key words】 triplet diphenylcarbene; laser flash photolysis; substituent effect;
【Key words】 triplet diphenylcarbene; laser flash photolysis; substituent effect;
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,2000年11期
- 【分类号】O621.25
- 【被引频次】4
- 【下载频次】108