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发现了二烯基双锂与全卤代烃可发生亲卤反应,卤素的活性次序为I>Br>Cl>>F。用ESR跟踪反应,发现锂桥自由基为反应中间体。产物结构的研究和中间体的捕捉实验表明反应中还并存有二卤卡宾中间体。提出了二烯基双锂与全卤代烃亲卤反应的SET反应机理。
It was found that the diketopyrrolopyrrole and perhalogenated hydrocarbons can undergo the halogen reaction, and the order of the halogens is I> Br> Cl >> F. The reaction was followed by ESR and it was found that the lithium bridge free radical was the reaction intermediate. The study of the product structure and the capture experiment of the intermediate show that there are also dihalocarbene intermediates in the reaction. The SET reaction mechanism of diallyl di-lithium and perhalogenated hydrocarbon was proposed.