Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives
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-SiO2/1,5-diazabicyclo[4.3.0]non-5-en was synthesized, characterized and used as a heterog...
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doaj-a1a9ad1cbbfb48138828f61664f839402021-05-23T11:25:09ZengBMCBMC Chemistry2661-801X2021-05-0115111010.1186/s13065-021-00760-3Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivativesMaryam Mehravar0Bi Bi Fatemeh Mirjalili1Elaheh Babaei2Abdolhamid Bamoniri3Department of Chemistry, College of Science, Yazd UniversityDepartment of Chemistry, College of Science, Yazd UniversityDepartment of Chemistry, College of Science, Yazd UniversityDepartment of Organic Chemistry, Faculty of Chemistry, University of KashanAbstract 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-SiO2/1,5-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-SiO2/1,5-diazabicyclo[4.3.0]non-5-en. Results Tetrahydrobenzo[b]pyrans were synthesized by using nano-SiO2/1,5-diazabicyclo[4.3.0]non-5-en via one-pot three-component condensation of malononitrile, aldehydes and dimedone in H2O/EtOH at 60 °C. The results indicate that tetrahydrobenzo[b]pyrans were synthesized in good to high yields and short reaction times. Conclusions The fundamental privileges of this method are short reaction time, plain procedure, recyclability of catalyst and high yields of products.https://doi.org/10.1186/s13065-021-00760-3Nano-SiO2/DBNBenzopyransHeterogeneous catalystMulticomponent reactionNano-silica |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Maryam Mehravar Bi Bi Fatemeh Mirjalili Elaheh Babaei Abdolhamid Bamoniri |
spellingShingle |
Maryam Mehravar Bi Bi Fatemeh Mirjalili Elaheh Babaei Abdolhamid Bamoniri Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives BMC Chemistry Nano-SiO2/DBN Benzopyrans Heterogeneous catalyst Multicomponent reaction Nano-silica |
author_facet |
Maryam Mehravar Bi Bi Fatemeh Mirjalili Elaheh Babaei Abdolhamid Bamoniri |
author_sort |
Maryam Mehravar |
title |
Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives |
title_short |
Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives |
title_full |
Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives |
title_fullStr |
Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives |
title_full_unstemmed |
Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives |
title_sort |
nano-sio2/dbn: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives |
publisher |
BMC |
series |
BMC Chemistry |
issn |
2661-801X |
publishDate |
2021-05-01 |
description |
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-SiO2/1,5-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-SiO2/1,5-diazabicyclo[4.3.0]non-5-en. Results Tetrahydrobenzo[b]pyrans were synthesized by using nano-SiO2/1,5-diazabicyclo[4.3.0]non-5-en via one-pot three-component condensation of malononitrile, aldehydes and dimedone in H2O/EtOH at 60 °C. The results indicate that tetrahydrobenzo[b]pyrans were synthesized in good to high yields and short reaction times. Conclusions The fundamental privileges of this method are short reaction time, plain procedure, recyclability of catalyst and high yields of products. |
topic |
Nano-SiO2/DBN Benzopyrans Heterogeneous catalyst Multicomponent reaction Nano-silica |
url |
https://doi.org/10.1186/s13065-021-00760-3 |
work_keys_str_mv |
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