bicyclic addends. The cis-1 bis(isobenzofuran) bisadducts 4b and 4e−j are kinetically far more stable toward thermal retro-Diels−Alder fragmentation than are mono(isobenzofuran) adducts of C60, in solution and in the solid state as determined by 1H NMR spectroscopy or thermogravimetric analysis. A methodology for the reversible solubilization of other fullerene derivatives based on this work is also presented
为了通过控制键断裂反应在
富勒烯C 60的笼内形成更宽的开口,我们研究了C 60六元环内相邻C C键的双重饱和。我们研究了两个束缚的
异苯并呋喃与
富勒烯C 60的双Diels-Alder环加成反应。在亚甲基或
喹喔啉系的双(
异苯并呋喃)前体2a - k与母体3,6-二氢-
1,2,4,5-四嗪(3b)反应后,我们以高收率获得了cis-1加合物。亚甲基双(
异苯并呋喃)-C 60加合物4b的X射线结构已经获得;四环取代基被双环加成物牢固地保持。的顺式-1双(
异苯并呋喃)bisadducts 4B和4E - Ĵ是动力学上更为朝向热逆狄尔斯-阿尔德碎裂比稳定是单(
异苯并呋喃)C的加成物60,在溶液中和在固态下由以下方法测定1个ħ NMR光谱或热重分析。还提出了基于该工作可逆增溶其他
富勒烯衍
生物的方法。