625376-15-0Relevant articles and documents
MCM-41-SO3H: an efficient, reusable, heterogeneous catalyst for the one-pot, three-component synthesis of pyrano[3,2-b]pyrans
Sarrafi, Yaghoub,Mehrasbi, Ebrahim,Mashalchi, Seyyedeh Zohreh
, p. 1729 - 1741 (2021/04/02)
MCM-41-SO3H, ordered mesoporous silica material MCM-41 with covalently anchored sulfonic acid groups, was used as a solid acid catalyst for the convenient, efficient, and ‘green’ synthesis of 2-amino-6-(hydroxymethyl)-8-oxo-4-aryl-4,8-dihydropy
Green synthesis of pyrano [3,2-b]pyran derivatives using nano Si–Mg–fluorapatite catalyst and the evaluation of their antibacterial and antioxidant properties
Ostadsharif Memar, Fardad,Khazdooz, Leila,Zarei, Amin,Abbaspourrad, Alireza
, p. 1792 - 1803 (2020/07/15)
In this study, we synthesize 2-amino-4-alkyl/aryl-6-(hydroxymethyl)-8-oxopyrano[3,2-b] pyran-3-carbonitriles derivatives using a multicomponent reaction featuring aromatic or aliphatic aldehydes, kojic acid, and malononitrile catalyzed by nano fluoroapati
s-Triazinium-based ionic liquid immobilized on silica-coated Fe3O4 magnetic nanoparticles: an efficient and magnetically separable heterogeneous catalyst for synthesis of 2-amino-4,8-dihydropyrano[3,2-b]pyran-3-carbonitrile derivativ
Azarifar, Davood,Ebrahimiasl, Hakimeh,Karamian, Roya,Ahmadi-Khoei, Masoumeh
, p. 341 - 354 (2019/01/28)
We have described a new method to heterogenize s-triazine catalyst by easy preparation of ionic liquid-based s-triazine-immobilized silica-coated Fe3O4 magnetic nanoparticles [Fe3O4@SiO2-s-triazinium
Synthesis of pyridinium-based salts: Catalytic application at the synthesis of six membered O-heterocycles
Babaee, Saeed,Zolfigol, Mohammad Ali,Zarei, Mahmoud,Abbasi, Maryam,Najafi, Zahra
, (2019/06/27)
In this paper, a range of pyridinium-based ionic liquid (IL) and molten salts (MSs) with various counter ions were designed, synthesized and fully characterized. These novel ionic liquid and molten salts were prepared via the reaction of [PySO3
Ferrocene-containing ionic liquid supported on silica nanospheres (SiO2@Imid-Cl@Fc) as a mild and efficient heterogeneous catalyst for the synthesis of pyrano[3,2-b]pyran derivatives under ultrasound irradiation
Teimuri-Mofrad, Reza,Esmati, Somayeh,Rabiei, Masoumeh,Gholamhosseini-Nazari, Mahdi
, p. 7 - 12 (2018/02/28)
A novel heterogeneous silica nanosphere-supported ferrocene-containing ionic liquid catalyst (SiO2@Imid-Cl@Fc) was designed and synthesised and was systematically characterised by Fourier transform infrared (FTIR) spectroscopy, field emission s
Efficient synthesis of new pyrano[3,2-b]pyran derivatives via Fe3O4@SiO2-IL-Fc catalyzed three-component reaction
Teimuri-Mofrad, Reza,Esmati, Somayeh,Rabiei, Masoumeh,Gholamhosseini-Nazari, Mahdi
, p. 439 - 444 (2017/12/18)
Ferrocene-containing ionic liquid supported on silica-coated Fe3O4 magnetic nanoparticles (nano Fe3O4@SiO2-IL-Fc), a novel heterogeneous nanocatalyst, was synthesized. The structure of the catalyst was characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction patterns (XRD), energy-dispersive X-ray spectroscopy (EDX) and field emission scanning electron microscopy (FE-SEM). The novel nanomagnetic catalyst was used in the one-pot synthesis of pyrano[3,2-b]pyran derivatives by the three-component reaction of various aldehydes, malononitrile and kojic acid or chlorokojic acid at room temperature under ultrasonic irradiation. This new method has many advantages such as simplicity, short reaction times, high yields, easy workup and easy purification. Also, the nanocatalyst can be separated on an external magnet and reused for at least six consecutive runs without any significant loss of its catalytic activity.
SiO2-OSO3H nanoparticles: An efficient, versatile and new reagent for the one-pot synthesis of 2-amino-8-oxo-4,8-dihydropyrano[3,2-b] pyran-3-carbonitrile derivatives in water, a green protocol
Sadeghi, Bahareh,Nezhad, Parinaz Farokhi,Hashemian, Saeedeh
, p. 54 - 57 (2014/02/14)
In a one-pot three-component reaction, an aromatic or aliphatic aldehyde, malononitrile and 5-hydroxy-2-hydroxymethyl-4H-pyran-4-one were condensed for the synthesis of 2-amino-8-oxo-4,8-dihydropyrano[3,2-b]pyran-3-carbonitrile derivatives in the presence of nano-silica sulfuric acid (SiO 2-OSO3H nanoparticles) in improved yields. The catalyst is recoverable by simple filtration and can be used in the subsequent reactions.
Synthesis, characterization, and application of Cu2O and NiO nanoparticles supported on natural nanozeolite clinoptilolite as a heterogeneous catalyst for the synthesis of pyrano[3,2-b]pyrans and pyrano[3,2-c]pyridones
Baghbanian, Seyed Meysam
, p. 59397 - 59404 (2015/02/19)
In this research, Cu2O and NiO nanoparticles supported on natural nanozeolite clinoptilolite (CP) was found to be a recoverable catalyst system for synthesis of pyrano-[3,2-c]pyridone and pyrano[3,2-b]pyran derivatives in aqueous media. The nan
Ultrasound promoted one-pot synthesis of 2-amino-4,8-dihydropyrano[3,2-b] pyran-3-carbonitrile scaffolds in aqueous media: A complementary 'green chemistry' tool to organic synthesis
Banitaba, Sayed Hossein,Safari, Javad,Khalili, Shiva Dehghan
supporting information, p. 401 - 407 (2013/01/15)
A green and simple approach to assembling of 2-amino-4,8-dihydropyrano[3,2- b]pyran-3-carbonitrile scaffolds via three-component reaction of kojic acid, malononitrile, and aromatic aldehydes in aqueous media under ultrasound irradiation is described. The combinatorial synthesis was achieved for this methodology with applying ultrasound irradiation while making use of water as green solvent. In comparison to conventional methods, experimental simplicity, good functional group tolerance, excellent yields, short routine, and selectivity without the need for a transition metal or base catalyst are prominent features of this green procedure.
Nanozeolite clinoptilolite as a highly efficient heterogeneous catalyst for the synthesis of various 2-amino-4H-chromene derivatives in aqueous media
Baghbanian, Seyed Meysam,Rezaei, Niloufar,Tashakkorian, Hamed
, p. 3446 - 3458 (2013/12/04)
The preparation of pharmaceutically active 2-amino-4H-chromene derivatives has been achieved using a nano powder of natural clinoptilolite (CP) zeolite. A wide range of these worthy structures having diverse substituents on the 4H-chromene ring were effic
