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Nano-SiO 2 /DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives.
- Source :
-
BMC chemistry [BMC Chem] 2021 May 21; Vol. 15 (1), pp. 34. Date of Electronic Publication: 2021 May 21. - Publication Year :
- 2021
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Abstract
- Background: The nano-sized particles enhance the exposed surface area of the active part of the catalyst, thereby increasing the contact between precursors and catalyst considerably. In this study, nano-SiO <subscript>2</subscript> /1,5-diazabicyclo[4.3.0]non-5-en was synthesized, characterized and used as a heterogeneous nanocatalyst for the synthesis of tetrahydrobenzo[b]pyran derivatives. Fourier Transform Infrared Spectroscopy, Field Emission Scanning Electron Microscopy, Brunauer-Emmett-Teller plot, Energy Dispersive X-ray Spectroscopy and Thermo Gravimetric Analysis were used to discern nano-SiO <subscript>2</subscript> /1,5-diazabicyclo[4.3.0]non-5-en.<br />Results: Tetrahydrobenzo[b]pyrans were synthesized by using nano-SiO <subscript>2</subscript> /1,5-diazabicyclo[4.3.0]non-5-en via one-pot three-component condensation of malononitrile, aldehydes and dimedone in H <subscript>2</subscript> O/EtOH at 60 °C. The results indicate that tetrahydrobenzo[b]pyrans were synthesized in good to high yields and short reaction times.<br />Conclusions: The fundamental privileges of this method are short reaction time, plain procedure, recyclability of catalyst and high yields of products.
Details
- Language :
- English
- ISSN :
- 2661-801X
- Volume :
- 15
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- BMC chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 34020696
- Full Text :
- https://doi.org/10.1186/s13065-021-00760-3