A facile one-step reaction of [60]fullerene with cinnamaldehydes and amines promoted by magnesium perchlorate/ferric perchlorate under air conditions afforded a series of rare amino-substituted cyclopentafullerenes in moderate to good yields. Stereoselectivity was readily achieved. Secondary amines exclusively produced N,N-disubstituted cyclopentafullerenes as cis isomers, while arylamines gave N-monosubstituted cyclopentafullerenes with a preference of cis isomers as major products. N-Monosubstituted cyclopentafullerenes could be further converted into other scarce cyclopentafullerenes in the presence of acid chloride or paraformaldehyde. A possible reaction pathway was proposed to elucidate the formation of amino-substituted cyclopentafullerenes.

中文翻译：

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高氯酸镁/高氯酸铁促进的氨基取代的环戊富勒烯的立体选择性合成。

在空气条件下，高氯酸镁/高氯酸铁促进的[60]富勒烯与肉桂醛和胺的简便一步反应，以中等至良好的收率得到了一系列稀有的氨基取代的环戊富勒烯。立体选择性很容易实现。仲胺专门生产N，N-二取代的环戊富勒烯为顺式异构体，而芳基胺则提供N-单取代的环戊富勒烯，以顺式异构体为主要产物。在酰氯或低聚甲醛的存在下，N-单取代的环戊富勒烯可以进一步转化为其他稀缺的环戊富勒烯。提出了可能的反应途径来阐明氨基取代的环戊富勒烯的形成。