Chemical transformations on the (60) fullerene framework via azirdination processes

摘要

Isolation of closed 6,6-bridged aziridinofullerenes 2 by reaction of (60) fullerene with singlet oxycarbonylnitrenes is accompanied by small amounts of previously undetected closed 5,6-adducts 4, thought to arise by trapping of triplet nitrenes. Isomerization of the 6,6-bridged adducts to the corresponding oxazolo (4',5':1,2) (60) fulleene derivatives 3 occurs upon heating with the exceptin of the tert-butoxycarbonyl adduct which eliminates isobutene and CO_2 to yield the parent aziridinofullerene C_60NH6.