Synthesis of 1,2,3,4-Bisiminofullerene and 1,2,3,4-Bis(triazolino)fullerene—on the Mechanism of the Addition Reactions of Organic Azides to [60]Fullerene
作者:Clifton K.-F. Shen、Hsiao-Hua Yu、Chiun-Gung Juo、Kuo-Ming Chien、Guor-Rong Her、Tien-Yau Luh
DOI:10.1002/chem.19970030514
日期:1997.5
AbstractThe reactions of organic azides with [60]fullerene have paved the way for the synthesis of adducts with a variety of structures. Treatment of [60]fullerene with 2,2‐dibenzyl‐1,3‐diazidopropane (10) in refluxing chlorobenzene afforded three products, namely, 8, 9, and 11 in 18, 25, and 11% yields, respectively. Thermolysis of 9a in refluxing chlorobenzene gave a 40:54:6 mixture of 8, 11, and C60 in quantitative yield. No interconversion between 8 and 11 was observed. Whereas 11 was stable towards thermolysis, 8 decomposed to C60 (35% yield) on refluxing in chlorobenzene for 24 h, but it did not produce any 11. This indicates that 9a is an intermediate in the formation of 8 and 11. A general mechanism for the addition of azides to C60 is proposed. A similar mechanistic pathway is suggested for the thermolysis of 9a.