For the first time, a selective and efficient method for the synthesis of 1',4'-dialkyl-1',4',5',6'-tetrahydropyrazino[2',3':1,9](С₆₀-I_h)[5,6]-fullerenes (alkyl = methyl, ethyl, isopropyl) was developed based on the reaction of C₆₀ fullerene with N-substituted ethylenediamines in PhMe–DMF medium effected by ultrasound.

中文翻译：

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1',4'-二烷基-1',4',5',6'-四氢吡嗪并[2',3':1,9](C60-Ih)[5,6]富勒烯的声化学合成

首次采用选择性高效的方法合成1',4'-二烷基-1',4',5',6'-四氢吡嗪并[2',3':1,9](С ₆₀ - I _h )[5,6]-富勒烯（烷基 = 甲基、乙基、异丙基）是基于 C ₆₀富勒烯与N-取代的乙二胺在 PhMe-DMF 介质中通过超声波的反应而开发的。