group. The following [5,6] ring closure and C–N bond scission led to aryl/alkyl aminylfullerenes with 1,2-configuration. Tolyl-substituted aminylfullerene was further converted into 1,4-di(p-tolyl)fullerene on treatment in acidic toluene.
Dramatic Mechanistic Change in Acid-Catalyzed Arylation of Azafulleroids Depending on their Ambident N/C Basicity: Formation of Cyclopentene Centered Pentakisadduct
Azafulleroid, amino‐bridged [5,6]‐open fullerene, has the ambident N/C basicity of the incorporated enamine moiety. Acid‐catalyzed arylation of N‐substituted azafulleroids proceeded via two types of initial N/C protonation to perform monoarylation or 1,4‐bisarylation for the N‐alkyl substituents and shuttlecock‐type pentakisarylation for the N‐phenyl substituent. The dramatic product change was explained
Ferric Perchlorate Promoted Reaction of [60]Fullerene with <i>N</i>-Sulfonyl Aldimines: Synthesis and Functionalization of Fulleroxazolidines
作者:Tong-Xin Liu、Fa-Bao Li、Dian-Bing Zhou、Guan-Wu Wang
DOI:10.1021/acs.joc.5b01868
日期:2015.12.18
The rare fulleroxazolidines 2 were successfully synthesized by the facile ferric perchlorate promoted reaction of [60]fullerene with various N-sulfonyl aldimines 1. Further functionalization of fulleroxazolidines by arenes in the presence of boron trifluoride afforded 1,4-bisarylation products 4. A possible reaction mechanism for the formation of the fulleroxazolidines is proposed.
1,4-Fullerenols C<sub>60</sub>ArOH: Synthesis and Functionalization
作者:Guan-Wu Wang、Yong-Ming Lu、Zhong-Xiu Chen
DOI:10.1021/ol900110g
日期:2009.4.2
A mild and facile process for the preparation of 1,4-fullerenols C60ArOH was achieved. The key intermediate 1,2-C60Ar(NO2) was identified to better understand the reaction mechanism. Further functionalizations including esterification, etherification, and arylation of the synthesized 1,4-C60ArOH provided efficient access to versatile fullerene derivatives in the presence of p-toluenesulfonic acid.
Lewis Acid-Assisted Nucleophilic Substitution of Fullerene Epoxide
A 1,4-bis(phenyl)-1,4-dihydro[60]fullerene resulting from an efficient nucleophilic substitution has been obtained by reaction of a fullerene epoxide, C60O, with nucleophilic aromatic compounds in the presence of boron trifluoride etherate as a Lewis acid.