Synthesis and transformation of a novel methano[60]fullerene having a formyl group
摘要:
The reaction of [60]fullerene with a dimethylsulfonium alpha -formylalkylide gave a novel methano[60]fullerene having a formyl group at the bridge-head carbon, This 2.2-[60]fulleroalkanal was readily converted into a variety of N-aryl-2,2-[60]fulleroaldimines by condensation with aromatic amines: one of them showed efficient quenching of the fluorescence of the [60]fullerene core, due to a photoinduced intramolecular electron transfer. (C) 2001 Elsevier Science Ltd. All rights reserved.
An Alternative Type of Fullerene Products from the Reaction of [60]Fullerene with Alkoxides and Subsequent Derivatization
摘要:
Reaction of [60]fullerene with freshly prepared RCH(2)CH(2)ONa/RCH(2)CH(2)OH (R = H, Me, Et, Ph) in anhydrous toluene in the presence of air unexpectedly afforded fullerene products with a C(60)-fused tetrahydrofuran ring Skeleton and an acetal moiety, which could be further transformed into C(60)-fused dihydrofurans, tolyl-substituted C(60)-fused tetrahydrofuran, and methanofullerenes bearing a formyl group by boron trifluoride etherate. Possible reaction mechanisms are proposed to explain the formation of different fullerene products.
synthesized by the fluoride ion-mediated reaction of [60]fullerene with 2-bromoenol silyl ethers, which were easily prepared by 2-bromination of the corresponding enol silyl ethers. The reactivity differed significantly depending on the stability of the 2-bromoenol silyl ethers. High yield and selectivity were achieved for the reaction of 2-bromoenol trimethylsilyl ethers under mild conditions (KF/18-crown-6-ether)
Copper-Catalyzed Reaction of C<sub>60</sub> with Tertiary Amines for the Preparation of Spiro-Linked Methanofullerenes and Fullerenoalkanals
作者:Yong-Jian Liu、Jie Ge、Chun-Bao Miao、Hai-Tao Yang
DOI:10.1021/acs.joc.9b00335
日期:2019.5.17
CuI-catalyzed reaction of C60 with tertiaryamines by using air as the sole oxidant has been developed. Spiro-linked methanofullerenes bearing cyclic amides and fullerenoalkanals can be obtained selectively using the cyclic and acyclic amines as starting materials, respectively. The reactions show a wide functional group tolerance. In addition, four ([6,6]-phenyl-C61-butyric acid methyl ester) analogues