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Title
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Green synthesis of tetrahydrobenzo[b]pyrans, pyrano[2,3-c]pyrazoles and spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles catalyzed by nano-structured diphosphate in water
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Type
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JournalPaper
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Keywords
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tetrahydrobenzo[b]pyrans, pyrano[2,3-c]pyrazoles, spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles, nano-structured diphosphate, water
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Abstract
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A green and recoverable nano-structured diphosphate (Na2CaP2O7) was synthesized and fully characterized using FT-IR spectra, X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) analysis. The nanostructured catalyst has been successfully used as reusable nanostructured catalyst for green, simple and efficient synthesis of tetrahydrobenzo[b]pyrans, pyrano[2,3-c]pyrazoles and spiro[indoline-3,4′-pyrano[2,3-c]pyrazoles in aqueous media. The catalyst shows environmentally benign character, which can be easily prepared, stored, and recovered several times without obvious significant loss of catalytic activity.
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Researchers
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Hossien Ali Akhlaghi (Fifth Researcher), Amir Khojastehnezhad (Fourth Researcher), Reza Tayebee (Third Researcher), Negar Nasiri (Second Researcher), Behrooz Maleki (First Researcher)
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