RT info:eu-repo/semantics/article
T1 F,O,S-codoped graphitic carbon nitride as an efficient photocatalyst for the synthesis of benzoxazoles and benzimidazoles
A1 Santiago Aliste, Alberto
A1 Sánchez Hernández, Eva
A1 Andrés Juan, Celia
A1 Chamorro Posada, Pedro
A1 Antorrena, Guillermo
A1 Martín Gil, Jesús
A1 Martín Ramos, Pablo
K1 Photocatalysis
K1 Asymmetric synthesis
K1 Catalysis
K1 Graphitic carbon nitride
K1 Carbon composites
K1 Carbono - Compuestos
K1 Grafito
K1 Spectroscopy
K1 Infrared spectroscopy
K1 Chemistry
K1 Physical chemistry
K1 Analytical chemistry
K1 2210.01 Catálisis
K1 2210 Química Física
K1 2301 Química Analítica
K1 2209.21 Espectroscopia
K1 2301.08 Espectroscopia de Infrarrojos
AB Graphitic carbon nitride (g-C3N4) is a metal-free heterogeneous catalyst that has attracted attention because of its good chemical stability, cost-effectiveness, and environmental friendliness. In the work presented herein, F,O,S-codoped carbon nitride was synthesized by heating a mixture of melamine cyanurate and trifluoromethanesulfonic acid at 550 °C for 50 min. The obtained product was characterized by transmission electron microscopy, infrared spectroscopy, X-ray powder diffraction, CHNS elemental analysis, total combustion-ion chromatography, X-ray photoelectron spectroscopy, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, and UV-Vis spectroscopy. Results point to an F,O,S-codoped g-C3N4. The material was applied as a photocatalyst for the formation of benzoxazoles and benzimidazoles by condensation–aromatization of 2-aminophenol or 1,2-phenylenediamine with suitable aldehydes (viz. benzaldehyde, 4-chlorobenzaldehyde, 2-naphthaldehyde, 2-hydroxybenzaldehyde, and 2-methoxybenzaldehyde), obtaining yields of up to 90% in 15 min under visible light irradiation, with good selectivity and reusability. Thus, the reported findings suggest that this F,O,S-codoped g-C3N4 may hold promise as a metal-free photocatalyst for the rapid synthesis of 2-arylbenzoxazoles and 2-arylbenzimidazoles.
PB MDPI
SN 2073-4344
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/69402
UL https://uvadoc.uva.es/handle/10324/69402
LA eng
NO Catalysts, 2023, Vol. 13, Nº. 2, 385
NO Producción Científica
DS UVaDOC
RD 22-nov-2024