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.
Dimers are a girl's best friend: The title reaction allows the formation of single‐bonded fullerenedimers with extremely high chemical yield and high compatibility with various functional groups, which are highly soluble in organic solvents. The use of Cu(OAc)2 catalyst with dimethylformamide or acetonitrile as additives under air is the critical factor in achieving the highlyefficient catalytic
Functional 2-benzyl-1,2-dihydro[60]fullerenes as acceptors for organic photovoltaics: facile synthesis and high photovoltaic performances
作者:Shirong Lu、Tienan Jin、Takeshi Yasuda、Ashraful Islam、Md. Akhtaruzzaman、Liyuan Han、Khalid A. Alamry、Samia A. Kosa、Abdullah Mohamed Asiri、Yoshinori Yamamoto
DOI:10.1016/j.tet.2012.11.099
日期:2013.1
A new series of functional 2-benzyl-1,2-dihydro[60]fullerenes, BnHCs, were synthesized efficiently via co-catalyzed selective monofunctionalization of C-60 with functional benzyl bromides. Photophysical and electrochemical properties of the new BnHCs were investigated. PSCs based on 2-MeO-4-CO2Me-BnHC as new acceptor and P3HT as donor showed a power conversion efficiency of 3.75%, which is comparable to that of PC61BM under the same device conditions. (c) 2012 Elsevier Ltd. All rights reserved.