194282-74-1Relevant academic research and scientific papers
Alum [KAl(SO4)2·12H2O]: A green and efficient catalyst for synthesis of pyrano[4,3-b]pyrans in water under conventional and microwave conditions
Rajguru, Deepika,Keshwal, Balwant S.,Jain, Shubha,Bhagwat, Vasant W.
, p. 1411 - 1416 (2013)
One-pot synthesis of pyrano[4,3-b]pyrans by condensation of 4-hydroxy-6-methylpyran-2-one, aromatic aldehydes, and malononitrile or cyanoacetates in water using alum as a non-toxic, readily available, and reusable catalyst at 80 C under conventional condi
Solvent-free, green and efficient synthesis of pyrano[4, 3-b]pyrans by grinding and their biological evaluation as antitumor and antioxidant agents
Rajguru, Deepika,Keshwal, Balwant S.,Jain, Shubha
, p. 5934 - 5939 (2013)
A facile, green, and efficient method has been developed for the synthesis of pyrano[4, 3-b]pyrans via a one-pot reaction of aromatic aldehydes, malononitrile, and 4-hydroxy-6-methyl-pyran-2-one in the presence of ammonium acetate under solvent-free condi
4-(Succinimido)-1-butane sulfonic acid as a br?nsted acid catalyst for synthesis of pyrano[4,3-b]pyran derivatives under solvent-free conditions
Khaligh, Nader Ghaffari
, p. 26 - 30 (2015)
4-(Succinimido)-1-butane sulfonic acid as an efficient and reusable Br?nsted acid catalyzed the synthesis of pyrano[4,3-b]pyran derivatives under solvent-free conditions. The catalyst can be prepared by mixing succinimide and 1,4-butanesultone that is mor
1,1′-Butylenebis(3-sulfo-3H-imidazol-1-ium) hydrogensulfate: a versatile task-specific ionic liquid catalyst for the synthesis of 4H-pyran scaffolds through non-conventional process
Khaligh, Nader Ghaffari,Ling, Ong Chiu,Mihankhah, Taraneh,Johan, Mohd Rafie,Ching, Juan Joon
, p. 655 - 662 (2019)
Abstract: In the present study, the catalytic efficiency of 1,1′-butylenebis(3-sulfo-3H-imidazol-1-ium) hydrogensulfate (BBSI-HSO4) as a versatile sulfonic acid-functionalized ionic liquid was demonstrated for the one-pot mechanosynthesis of py
4-(Succinimido)-1-butane sulfonic acid as a Br?nsted acid catalyst for the synthesis of pyrano[4,3-b]pyran derivatives using thermal and ultrasonic irradiation
Khaligh, Nader Ghaffari,Hamid, Sharifah Bee Abd
, p. 728 - 733 (2015)
4-(Succinimido)-1-butane sulfonic acid was shown to be an efficient and reusable Br?nsted acid catalyst for the synthesis of pyrano[4,3-b]pyran derivatives using thermal and ultrasonic conditions. The catalyst was prepared by mixing succinimide and 1,4-bu
H6P2W18O62·18H 2O: A green and reusable catalyst for one-pot synthesis of pyrano[4,3-b]pyrans in water
Rajguru, Deepika,Keshwal, Balwant S.,Jain, Shubha
, p. 1033 - 1036 (2013)
A convenient, efficient and environmentally benign procedure has been developed for the synthesis of pyrano[4,3-b]pyran derivatives via a one-pot, three-component reaction of 4-hydroxy-6-methylpyran-2-one, aldehydes and malononitrile in water using H
1H-imidazol-3-ium tricyanomethanide {[HIM]C(CN)3} as a nanostructured molten salt catalyst: application to the synthesis of pyrano[4,3‐b]pyrans
Zolfigol, Mohammad Ali,Yarie, Meysam,Baghery, Saeed,Khoshnood, Abbas,Alonso, Diego A.
, p. 3291 - 3305 (2017)
In this work, we have synthesized a novel nanostructured molten salt, 1H-imidazol-3-ium tricyanomethanide {[HIMI]C(CN)3} (1), as an efficient and green protocol-compatible catalyst. This new molten salt has been fully characterized b
A facile and efficient synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[4,3-b]pyrans derivatives using phosphate fertilizers MAP, DAP, and TSP as heterogeneous catalysts
Boukhris, Said,Chehab, Soukaina,Ghailane, Rachida,Ghailane, Tourya,Lakhrissi, Brahim,Merroun, Youssef,Souizi, Abdelaziz
, p. 2665 - 2678 (2021/04/05)
A simple and efficient one-pot synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[4,3-b]pyrans derivatives was described. These reactions were realized through a three-component condensation of aromatic aldehyde, malononitrile, and 5,5-dimethyl-1,3-c
Synthesis of a novel bifunctional oxyammonium-based ionic liquid: Application for the synthesis of pyrano[4,3-b]pyrans and tetrahydrobenzo[b]pyrans
Zarei, Azra,Yarie, Meysam,Zolfigol, Mohammad Ali,Niknam, Khodabakhsh
, p. 1120 - 1131 (2019/12/24)
In the present investigation, a novel bifunctional oxyammonium-based ionic liquid, namely, 2,2′-(ethane-1,2-diylbis[oxy])bis(ethan-1-aminium)-2,2,2-trifluoroacetate, was designed and synthesized. The structure of the titled ionic liquid was characterized
Zn(L-proline)2 as an efficient and reusable catalyst for the multi-component synthesis of pyran-annulated heterocyclic compounds
Tahmassebi, Daryoush,Blevins, John E.,Gerardot, Shori S.
, (2019/02/19)
We have developed a simple, straightforward and highly efficient multi-component one-pot synthesis of 2-amino-3-cyano-4H-pyrans and pyran-annulated heterocyclic compounds. Zn(L-proline)2 has been utilized as a mild and efficient Lewis acid cata
