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Selective formation of dihydrofuran fused [60] fullerene derivatives by TEMPO mediated [3 + 2] cycloaddition of medium chain β-keto esters to C60

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2021
Selective_formation_of_pub_2021.pdf (660.6Kb)
Authors
Jakšić, Jovana
Mitrović, Aleksandra D.
Tokić-Vujošević, Zorana
Milčić, Miloš K.
Maslak, Veselin
Article (Published version)
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Abstract
In this study, β-keto esters as readily available bio-based building blocks were used to decorate the C60 sphere. Generally, cyclopropanated fullerene derivatives are obtained by the standard Bingel–Hirsch procedure. Herein, omitting the iodine from the reaction mixture and adding TEMPO afforded dihydrofuran fused C60 fullerene derivatives. The mechanism of the reaction shifted from nucleophilic aliphatic substitution to oxidative [3 + 2] cycloaddition via fullerenyl cations as an intermediate. This mechanism is proposed based on a series of control experiments with radical scavengers. Therefore, dihydrofuran-fused C60 derivatives were selectively obtained in good yields and their structures were established based on UV-Vis, IR, NMR spectroscopy and mass spectrometry. The electrochemical properties of the synthesized compounds were investigated by cyclic voltammetry. DFT calculations were performed in order to investigate the difference in stability, electronic properties and π-electro...n delocalization between methano and furano fullerenes.

Source:
RSC Advances, 2021, 11, 47, 29426-29432
Publisher:
  • Royal Society of Chemistry
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200168 (University of Belgrade, Faculty of Chemistry) (RS-200168)
Note:
  • Supplementary material: https://cherry.chem.bg.ac.rs/handle/123456789/4717
Related info:
  • Referenced by
    https://cherry.chem.bg.ac.rs/handle/123456789/4717

DOI: 10.1039/D1RA03944J

ISSN: 2046-2069

WoS: 000702237900028

Scopus: 2-s2.0-85116237014
[ Google Scholar ]
URI
https://cherry.chem.bg.ac.rs/handle/123456789/4714
Collections
  • Publikacije
Institution/Community
Hemijski fakultet
TY  - JOUR
AU  - Jakšić, Jovana
AU  - Mitrović, Aleksandra D.
AU  - Tokić-Vujošević, Zorana
AU  - Milčić, Miloš K.
AU  - Maslak, Veselin
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4714
AB  - In this study, β-keto esters as readily available bio-based building blocks were used to decorate the C60 sphere. Generally, cyclopropanated fullerene derivatives are obtained by the standard Bingel–Hirsch procedure. Herein, omitting the iodine from the reaction mixture and adding TEMPO afforded dihydrofuran fused C60 fullerene derivatives. The mechanism of the reaction shifted from nucleophilic aliphatic substitution to oxidative [3 + 2] cycloaddition via fullerenyl cations as an intermediate. This mechanism is proposed based on a series of control experiments with radical scavengers. Therefore, dihydrofuran-fused C60 derivatives were selectively obtained in good yields and their structures were established based on UV-Vis, IR, NMR spectroscopy and mass spectrometry. The electrochemical properties of the synthesized compounds were investigated by cyclic voltammetry. DFT calculations were performed in order to investigate the difference in stability, electronic properties and π-electron delocalization between methano and furano fullerenes.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Selective formation of dihydrofuran fused [60] fullerene derivatives by TEMPO mediated [3 + 2] cycloaddition of medium chain β-keto esters to C60
VL  - 11
IS  - 47
SP  - 29426
EP  - 29432
DO  - 10.1039/D1RA03944J
ER  - 
@article{
author = "Jakšić, Jovana and Mitrović, Aleksandra D. and Tokić-Vujošević, Zorana and Milčić, Miloš K. and Maslak, Veselin",
year = "2021",
abstract = "In this study, β-keto esters as readily available bio-based building blocks were used to decorate the C60 sphere. Generally, cyclopropanated fullerene derivatives are obtained by the standard Bingel–Hirsch procedure. Herein, omitting the iodine from the reaction mixture and adding TEMPO afforded dihydrofuran fused C60 fullerene derivatives. The mechanism of the reaction shifted from nucleophilic aliphatic substitution to oxidative [3 + 2] cycloaddition via fullerenyl cations as an intermediate. This mechanism is proposed based on a series of control experiments with radical scavengers. Therefore, dihydrofuran-fused C60 derivatives were selectively obtained in good yields and their structures were established based on UV-Vis, IR, NMR spectroscopy and mass spectrometry. The electrochemical properties of the synthesized compounds were investigated by cyclic voltammetry. DFT calculations were performed in order to investigate the difference in stability, electronic properties and π-electron delocalization between methano and furano fullerenes.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Selective formation of dihydrofuran fused [60] fullerene derivatives by TEMPO mediated [3 + 2] cycloaddition of medium chain β-keto esters to C60",
volume = "11",
number = "47",
pages = "29426-29432",
doi = "10.1039/D1RA03944J"
}
Jakšić, J., Mitrović, A. D., Tokić-Vujošević, Z., Milčić, M. K.,& Maslak, V.. (2021). Selective formation of dihydrofuran fused [60] fullerene derivatives by TEMPO mediated [3 + 2] cycloaddition of medium chain β-keto esters to C60. in RSC Advances
Royal Society of Chemistry., 11(47), 29426-29432.
https://doi.org/10.1039/D1RA03944J
Jakšić J, Mitrović AD, Tokić-Vujošević Z, Milčić MK, Maslak V. Selective formation of dihydrofuran fused [60] fullerene derivatives by TEMPO mediated [3 + 2] cycloaddition of medium chain β-keto esters to C60. in RSC Advances. 2021;11(47):29426-29432.
doi:10.1039/D1RA03944J .
Jakšić, Jovana, Mitrović, Aleksandra D., Tokić-Vujošević, Zorana, Milčić, Miloš K., Maslak, Veselin, "Selective formation of dihydrofuran fused [60] fullerene derivatives by TEMPO mediated [3 + 2] cycloaddition of medium chain β-keto esters to C60" in RSC Advances, 11, no. 47 (2021):29426-29432,
https://doi.org/10.1039/D1RA03944J . .

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