Cu-Catalyzed C–H Amination of Hydrofullerenes Leading to 1,4-Difunctionalized Fullerenes
摘要:
A novel and highly efficient Cu-catalyzed C-H amination of the monofunctionalized hydrofullerenes for the synthesis of 1,4-difunctional fullerenes has been reported. A new series of 1,4-fullerene derivatives having various monoamine addends were synthesized in good to high yields under mild reaction conditions. The controlled experiments revealed that the reaction proceeds through the formation of a fullerene monoradical as a key intermediate followed by coupling with an amine radical.
Ni-Catalyzed direct 1,4-difunctionalization of [60]fullerene with benzyl bromides
作者:Weili Si、Xuan Zhang、Naoki Asao、Yoshinori Yamamoto、Tienan Jin
DOI:10.1039/c5cc01534k
日期:——
A new Ni-catalyzed direct 1,4-difunctionalization of [60]fullerene with various benzyl bromides has been developed. The use of a DMSO additive combined with a nickel catalyst is indispensable for the formation of 1,4-dibenzyl fullerenes with a variety of functional groups. The reaction proceeds through the formation of a fullerene monoradical species.
NaOH-Catalyzed Dimerization of Monofunctionalized Hydrofullerenes: Transition-Metal-Free, General, and Efficient Synthesis of Single-Bonded [60]Fullerene Dimers
NaOH-catalyzed homo- and cross-dimerizations of monofunctionalizedhydrofullerenes are reported. Various single-bondedfullerenedimers were synthesized under mild reaction conditions with remarkably high yields. The use of a NaOH catalyst combined with tetrahydrofuran as a cosolvent under an air atmosphere is critical in achieving highlyefficient catalytic dimerization.