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Feb 7, 2023Keywords:
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A novel biopolymer-based nanomagnetic catalyst for the synthesis of 4<i>H</i>-pyran and tetrahydro-4<i>H</i>-chromene derivatives
Ahmad Poursattar Marjania
Abstract
In the present study, we have designed and synthesized a new magnetically recoverable, nanocatalyst of Ag/Fe3O4@starch. The successful synthesis and the structure of the nanocatalyst were confirmed and evaluated with several analytical techniques including XRD, EDX, VSM, FT-IR,TEMandTGA. The impact and efficiency of Ag/Fe3O4@starch were successfully investigated
in the one-pot synthesis of desired 4H-pyrans and tetrahydro-4H-chromenes using three-component condensation of various aldehydes, malononitrile, and 1,3-diketoesters or cyclic 1,3-diketones. The magnetic nanocatalyst was easily recovered and reused with high catalytic activity even after up to five runs.
