Highly efficient and environmentally benign method for the synthesis of tetrahydrobenzo[b]pyrans using Ca9.5Mg0.5(PO4)5.5(SiO4)0.5F1.5 as a new bio- and nanocatalyst with Brønsted base and Lewis acid properties

Khazdooz, Leila; Zarei, Amin; Ahmadi, Tahmineh; Aghaei, Hamidreza; Golestanifar, Laleh; Sheikhan, Nafisehsadat

doi:10.1007/s11164-017-3092-3

Cited by 11 publications

(1 citation statement)

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“…(refs.) 1 4-NO 2 –C 6 H 4 – 5 95 181–217 49 2 4-F–C 6 H 4 – 5 94 191–194 49 3 4-Br–C 6 H 4 – 5 96 199–200 49 4 4-Cl–C 6 H 4 – 7 97 215–216 48 5 4-OH–C 6 H 4 – 15 94 213–215 51 6 4-OMe–C 6 H 4 – 15 94 208–210 51 8 3-NO 2 –C 6 H 4 – 35 93 216–218 51 9 2-NO 2 –C 6 H 4 – 35 95 234–236 51 10 2-Cl–C 6 H 4 – 35 95 216–218 50 11 2,6-(Cl) 2 –C 6 H ...…”

Section: Resultsmentioning

confidence: 99%

Fe3O4@nano-almondshell/Si(CH2)3/2-(1-piperazinyl)ethylamine as an effective magnetite almond shell-based nanocatalyst for the synthesis of dihydropyrano[3,2-c]chromene and tetrahydrobenzo[b]pyran derivatives

Mallah

Mirjalili

Bamoniri

2023

Sci Rep

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The preparation and design of nano-catalysts based on magnetic biopolymers as green and biocompatible nano-catalysts have made many advances. This paper deals with the preparation of magnetite biopolymer-based Brønsted base nano-catalyst from a nano-almond (Prunus dulcis) shell. This magnetite biopolymer-based nano-catalyst was obtained through a simple process based on the core-shelling of nano-almond shell and Fe3O4 NPs and then the immobilization of 3-chloropropyltrimethoxysilane as linker and 2-aminoethylpiperazine as a basic section. Structural and morphological analysis of this magnetite biopolymer-based nano-catalyst were done using Fourier transform infrared spectroscopy, field emission scanning electron microscopy, X-ray diffraction, Thermogravimetric analysis, Vibrating sample magnetization, Energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller, and Transmission electron microscopy techniques. The performance of the synthesized Fe3O4@nano-almondshell/Si(CH2)3/2-(1-piperazinyl)ethylamine as a novel magnetite biopolymer-based nano-catalyst for the synthesis of dihydropyrano[3,2-c]chromene and tetrahydrobenzo[b]pyran was investigated and showed excellent efficiency.

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