作者:Marc Robert、John P. Toscano、Matthew S. Platz、Sarah C. Abbot、Mary M. Kirchhoff、Richard P. Johnson
DOI:10.1021/jp962333h
日期:1996.1.1
Laser flash photolysis (308 nm) of endo-7-chlorodibenzo[a,c]bicyclo[4.1.0]heptane produces phenanthrene and chlorocarbene, which can be trapped with pyridine to form an ylide. The ylide absorbs strongly at 374 nm, and its lifetime is many tens of microseconds. It was not possible to resolve the grow of the ylide due to the rapid reaction of chlorocarbene with solvent. It was possible, however, to deduce
的激光闪光光解(308纳米)内切氯二苯-7一个,Ç]双环[4.1.0]庚烷产生菲和氯卡宾,它们可以被吡啶捕获以形成叶立德。叶立德在374 nm处吸收很强,其寿命为数十微秒。由于氯卡宾与溶剂的快速反应,无法解决叶立德的增长问题。但是,可以通过测量作为[吡啶]的函数的内酯的收率,并假设氯卡宾的绝对反应速率常数是二氯卡宾和烷基氯卡宾的平均值,来推断氯卡宾在各种溶剂中的寿命。先前已有报道。然后,通过Stern-Volmer方法推导了氯卡宾与烯烃反应的绝对速率常数,