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Design and synthesis of PDSPTCF as an influential Brønsted-Lewis acidic catalyst for the producing benzoabenzo6,7chromeno2,3-cphenazines
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Design and synthesis of PDSPTCF as an influential Brønsted-Lewis acidic catalyst for the producing benzoabenzo6,7chromeno2,3-cphenazines
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Design and synthesis of PDSPTCF as an influential Brønsted-Lewis acidic catalyst for the producing benzoabenzo6,7chromeno2,3-cphenazines
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Journal Article
Design and synthesis of PDSPTCF as an influential Brønsted-Lewis acidic catalyst for the producing benzoabenzo6,7chromeno2,3-cphenazines
2024
Overview
Initially, 4,4'-(1,4-phenylene)di(sulfonic)pyridinium tetrachloroferrate (PDSPTCF) as a novel organic–inorganic hybrid salt was synthesized and identified by elemental mapping, energy-dispersive X-ray spectroscopy, inductively coupled plasma atomic emission spectrometer, Raman spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, vibrating-sample magnetometry, and thermal gravimetric (TG) techniques. Then, the catalytic performance of this hybrid salt was assessed for the producing benzo[
a
]benzo[6,7]chromeno[2,3-
c
]phenazine derivatives via one-pot multicomponent domino reaction (MDR) of benzene-1,2-diamine, 2-hydroxynaphthalene-1,4-dione and aldehydes under optimal conditions (70 °C, solvent-free, 5 mol% PDSPTCF) in short reaction times and high yields. Highly efficacy of the PDSPTCF for the production of benzo[
a
]pyrano[2,3-
c
]phenazines can be assigned to the synergistic effect of Lewis and Brønsted acids, and having two positions of each acid (i.e., FeCl
4
ˉ and –SO
3
H). In addition, this catalyst showed good reproducibility with six cycles of recycling.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
4,4'-(1,4-phenylene)di(sulfonic)pyridinium tetrachloroferrate (PDSPTCF)
/ Benzene
/ Benzo[a]benzo[6,7]chromeno[2,3-c]phenazine
/ Brønsted-Lewis acidic catalyst
/ Humanities and Social Sciences
/ Multicomponent domino reactions (MDRs)
/ Organic–inorganic hybrid salt
/ Scanning electron microscopy
/ Science
/ Solvents
