107752-99-8Relevant academic research and scientific papers
One-pot synthesis of various 2-amino-4H-chromene derivatives using a highly active supported ionic liquid catalyst
Sharma, Pankaj,Gupta, Monika,Kant, Rajni,Gupta, Vivek K.
, p. 32052 - 32059 (2016)
In this paper, a supported ionic liquid catalyst (SILC) was synthesized by dissolving palladium acetate in [BMIM][OH] and immobilizing it on the surface of HAP. Further, it was characterized by SEM, TEM, TGA, FTIR, AAS and EDAX. This SILC was then used to
Condition based divergence in synthesis of tetrahydrobenzo[b]pyrans
Khandebharad, Amol U.,Sarda, Swapnil R.,Gill, Charansingh H.,Soni, Mahesh G.,Agrawal, Brijmohan R.
, p. 5779 - 5787 (2016)
Abstract: An environmentally benign novel strategy is developed for the synthesis of tetrahydrobenzo[b]pyrans by using thiamine mononitrate as a green catalyst, with the help of a conventional as well as non-conventional energy source. Synthesis of tetrahydrobenzo[b]pyrans is achieved by one pot condensation of aromatic aldehydes, malononitrile and dimedone in a water–ethanol system. Use of aqueous reaction media, mild conditions, water stable catalyst and energy plummeting process as well as excellent yield, are the key features in completing the reaction. This method excludes the use of volatile organic solvents, tedious workup and column chromatographic purification of compounds, making the method greener, convenient and superior. Graphical Abstract: [Figure not available: see fulltext.]
β-Cyclodextrin as an efficient catalyst for the one-pot synthesis of tetrahydrobenzo[b]pyran derivatives in water
Lu, Jun,Fu, Xue-Wen,Zhang, Ge,Wang, Chun
, p. 417 - 424 (2016)
Various 4H-benzo[b]pyran derivatives were synthesized via a one-pot three-component condensation of arylaldehyde, malononitrile and dimedone in water using β-cyclodextrin (β-CD) as an efficient catalyst. This method provides several advantages, including
Caro's acid-silica gel: An efficient and versatile catalyst for the one-pot synthesis of tetrahydrobenzo[b]pyran derivatives
Oskooie, Hossein Abdi,Heravi, Majid M.,Karimi, Narges,Zadeh, Mojgan Ebrahim
, p. 436 - 440 (2011)
An efficient one-pot synthesis of tetrahydrobenzo[b]pyran is described. This involved the three-component reaction of aromatic aldehydes, molononitrile, and dimedone in the presence of a catalytic amount of Caro's acid supported on silica gel in ethanol/w
One-pot synthesis of 2-amino-4: H -chromene derivatives by MNPs@Cu as an effective and reusable magnetic nanocatalyst
Ma, Wanzheng,Ebadi, Abdol Ghaffar,Sabil, Mostafa Shahbazi,Javahershenas, Ramin,Jimenez, Giorgos
, p. 12801 - 12812 (2019)
In this research, MNPs@Cu as an effective and recyclable nanocatalyst was prepared and characterized using different methods including Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), vibrating sample magnetometry (VSM),
Synthesis of Eu(III) fabricated spinel ferrite based surface modified hybrid nanocomposite: Study of catalytic activity towards the facile synthesis of tetrahydrobenzo[b]pyrans
Bayat, Mohammad,Kamalzare, Maryam,Karmakar, Bikash,Maleki, Ali,Taheri Kal-Koshvandi, Afsaneh,Tamoradi, Taiebeh
, (2020)
The present work demonstrates a modified protocol for thesynthesis of Europium (Eu) anchored iminodiacetic acid functionalized silica modified core-shell CoFe2O4 magnetic nanoparticles.This is the first report of Eu immobilized nanoc
One-pot synthesis of tetrahydrobenzo[b]pyrans catalyzed by PEG-1000 bridged primary amine functionalized dicationic ionic liquid in water
Wang, Ying-Lei,Li, Zhuo,Luo, Jun,Liu, Zu-Liang
, p. 1431 - 1436 (2013)
A novel poly (ethylene glycol) bridged primary amine functionalized dicationic ionic liquid ([PAPEG1000-DIL][BF4]) was synthesized and characterized by 1H-NMR, 13C-NMR, FT-IR and ESI-MS. The thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) analysis indicated the high thermal stability of [PA-PEG 1000-DIL][BF4]. It was used as an efficient and recyclable catalyst for the synthesis of substituted tetrahydrobenzo[b]pyrans through a one-pot three-component condensation of aromatic aldehydes, malononitrile and dimedone in 86% ～ 96% yields within 10 ～ 30 min in water. This method offers several advantages such as mild reaction conditions, simple operation and environmental friendliness. Furthermore, the catalyst could be easily recovered and reused for at least five runs without obvious loss of catalytic activity.
One-pot synthesis of substituted 4H-chromenes by nickel ferrite nanoparticles as an efficient and magnetically reusable catalyst
Ahankar, Hamideh,Ramazani, Ali,Slepokura, Katarzyna,Lis, Tadeusz,Joo, Sang Woo
, p. 719 - 734 (2018)
Nickel ferrite magnetic nanoparticles (NiFe 2 O 4 MNPs) were prepared via the autocombustion assisted sol-gel method. The efficient catalyst was investigated by FT-IR, XRD, ICP, SEM, and TEM techniques. A one-pot, three-component reaction is reported for
Fe3O4-supported N-pyridin-4-amine-grafted graphene oxide as efficient and magnetically separable novel nanocatalyst for green synthesis of 4H-chromenes and dihydropyrano[2,3-c]pyrazole derivatives in water
Azarifar, Davood,Khaleghi-Abbasabadi, Masoud
, p. 199 - 222 (2019)
Abstract: Fe3O4-magnetized N-pyridin-4-amine-functionalized graphene oxide [Fe3O4@GO-N-(pyridin-4-amine)] was readily prepared via a three-step procedure. The synthesized nanofilms were characterized by scanning
Zr@IL-Fe3O4MNPs as an efficient and green heterogeneous magnetic nanocatalyst for the one-pot three-component synthesis of highly substituted pyran derivatives under solvent-free conditions
Abbaspour-Gilandeh, Esmayeel,Aghaei-Hashjin, Mehraneh,Yahyazadeh, Asieh
, p. 23491 - 23505 (2021)
The present study was conducted to synthesize Zr@IL-Fe3O4MNPs as a new magnetically recoverable heterogeneous catalyst, which was then characterized by Fourier transform infrared (FT-IR) spectroscopy, energy dispersive X-ray spectros
