The mCPBA oxidation of methano-bridged [5,6] open fulleroid 1 anomalously resulted in the selective electrophilic addition at the bridgehead anti-Bredt double bond rather than the usual epoxidation. The mechanistic preference for the unprecedented stepwise addition of mCPBA vs the concerted epoxidation was explained in terms of the notable π-orbital misalignment (>30°) based on the B3LYP/6-31G(d) level
甲基桥连的[5,6]开放的Fulleroid 1的m CPBA氧化反常导致桥头抗-Bredt双键的选择性亲电子加成,而不是通常的环氧化。根据B3LYP / 6-31G(d)
水平计算得出的明显π轨道错位(> 30°),解释了对m CPBA前所未有地逐步加入m CPBA而不是协同环氧化的机理的偏爱。