The heterofullerenes have attracted much attention owing to its unique structure and properties.Among them,azafullerenes are the only known heterofullerene that have been widely investigated,but its low synthetic yield and poor stability hinders its extensive research.In this study,the synthesis process of monosubstituted azafullerenes with better stability was studied and optimized in detail.The ratio of starting materials and reaction time have been changed,and the single-step yield has increased efficiently from 42% to 70%.This is important for studying the formation mechanism of azafullere...
