New pyrrolidine and pyrroline derivatives of fullerenes: from the synthesis to the use in light-converting systems
作者:P. A. Troshin、A. S. Peregudov、S. I. Troyanov、R. N. Lyubovskaya
DOI:10.1007/s11172-008-0126-4
日期:2008.5
pyrroline derivatives of fullerenes C60 and C70 were synthesized and characterized. The proposed procedures afford the reaction products in yields twice as high (80–85%) as those attained by the classical Prato reaction. The reactions proceed with virtually complete regio- (in the case of C70) and stereoselectivity to afford only cis-2′,5′-disubstituted and trans-1′,2′,5′-trisubstituted pyrrolidinofullerenes
作者对由吡啶甲胺和苄胺衍生物生成的偶氮甲碱和腈叶立德的 [2+3] 环加成反应生成富勒烯的研究结果进行了系统化,并考虑了新的实验数据。催化剂和微波辐射促进叶立德的形成以及它们与富勒烯的加入首次被成功使用。合成并表征了大量新的富勒烯 C60 和 C70 的吡咯烷和吡咯啉衍生物。所提出的程序提供的反应产物的产率是经典普拉托反应的两倍(80-85%)。该反应以几乎完全的区域-(在 C70 的情况下)和立体选择性进行,仅提供顺式-2',5'-二取代和反式-1',2',5'-三取代的吡咯烷富勒烯。吡啶基取代的吡咯烷富勒烯与金属卟啉和酞菁反应形成自序配位配合物。后者是自然光合天线系统的类似物,因为这些复合物在暴露于光线时会发生光致电荷分离。