Pyridine-Functionalized MCM-41 as an Efficient and Recoverable Catalyst for the Synthesis of Pyran Annulated Heterocyclic Systems

Shaabani, Ahmad; Amini, Mostafa M.; Ghasemi, Sabrieh; Ghadari, Rahim; Rezayan, Ali Hossein; Fazaeli, Yousef; Feizi, Shahzad

doi:10.1248/cpb.58.270

Cited by 17 publications

(4 citation statements)

References 24 publications

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“…The samples of PVP and [PVPH]HSO 4 were also analyzed by scanning electron microscopy (SEM) with various magnifications for determining the particle shape, surface morphology, and size distribution, as represented in Fig. 4.…”

Section: Sem Analysismentioning

confidence: 99%

“…pyrans and their derivatives are important class of heterocyclic compounds which have attracted the attention of chemists because of their wide range of useful biological and pharmacological properties, such as antitumor, anticancer, antibacterial, antioxidant, diuretic, and ant allergic [1][2][3][4] activities. These compounds can be used as pigments, fluorescence markers, photoactive of the prepared reagent showed that the attributed structure by Chehardoli is incorrect and the reagent is not protected at N-atom and is actually protonated at O-atom.…”

Section: Introductionmentioning

confidence: 99%

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Efficient synthesis of 4H-pyran derivatives using a polymeric catalyst based on PVP

et al. 2015

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Section: Sem Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient synthesis of 4H-pyran derivatives using a polymeric catalyst based on PVP

et al. 2015

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“…Multi-component reactions (MCRs) have significant role in organic chemistry, because of some merits like selectivity, synthetic convergence, high atom economy, simplicity, short reaction time, facility of workup, synthetic efficiency and high yield of products [1,2]. An efficient way for the synthesis of heterocyclic compounds is using multi-component reactions, which have great value in design of biologically new active compounds [1,[3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives

et al. 2021

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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.

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“…Multi-component reactions (MCRs) have signi cant role in organic chemistry, because of some merits like selectivity, synthetic convergence, high atom economy, simplicity, short reaction time, facility of workup, synthetic e ciency and high yield of products [1,2]. An e cient way for the synthesis of heterocyclic compounds is using multi-component reactions, which have great value in design of biologically new active compounds [1,[3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Nano-SiO2/DBN: An efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives

Mehravar

Mirjalili

Babaei

et al. 2021

Preprint

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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.

show abstract

Pyridine-Functionalized MCM-41 as an Efficient and Recoverable Catalyst for the Synthesis of Pyran Annulated Heterocyclic Systems

Cited by 17 publications

References 24 publications

Efficient synthesis of 4H-pyran derivatives using a polymeric catalyst based on PVP

Efficient synthesis of 4H-pyran derivatives using a polymeric catalyst based on PVP

Nano-SiO2/DBN: an efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives

Nano-SiO2/DBN: An efficacious and reusable catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran derivatives

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