156176-90-8Relevant articles and documents
Fe3O4–SiO2–Bi2O3-catalyzed One-Pot Synthesis of Tetrahydrobenzo[b]pyran Derivatives Under Solvent-Free Conditions
Ebrahimi, S.,Hassani, H.
, p. 1346 - 1351 (2021/09/30)
Abstract: A Fe3O4–SiO2–Bi2O3 magnetic nanocatalyst was used to synthesize tetrahydrobenzo[b]pyran derivatives from malononitrile, cyclohexane-1,3-dione, and benzaldehyde derivatives at 80°C under solv
Ferrocene-Functionalized Dithiocarbamate Zinc(II) Complexes as Efficient Bifunctional Catalysts for the One-Pot Synthesis of Chromene and Imidazopyrimidine Derivatives via Knoevenagel Condensation Reaction
Anamika,Drew, Michael G. B.,Kumar, Kamlesh,Singh, Nanhai,Yadav, Chote Lal
, p. 6446 - 6462 (2021/05/31)
Four new mononuclear/coordination polymeric (CP) zinc(II) complexes (1-4) of ferrocenyl/pyridyl-functionalized dithiocarbamate ligands, N-ferrocenylmethyl-N-butyl dithiocarbamate (L1), N-ferrocenylmethyl-N-ethylmorpholine dithiocarbamate (L2), N-ferroceny
Nanostructured coumarin-based cobalt complex as an efficient, heterogeneous and recyclable catalyst for the three-component synthesis of benzo[b]pyran and 3,4-dihydropyrano[c]chromene derivatives
Sharghi, Hashem,Razavi, Seyyede Faeze,Aberi, Mahdi,Sabzalizadeh, Fatemeh,Karbalaei-Heidari, Hamid Reza
, p. 1641 - 1655 (2021/01/09)
Abstract: An improved one-pot three-component reaction of carbonyl compounds (dimedon, 4-hydroxy coumarin and 1,3-cyclohexadion) with malononitrile and aryl aldehydes in aqueous media (H2O:EtOH) as a solvent with short reaction time for the synthesis of benzo[b]pyran and 3,4- dihydropyrano[c]chromane derivatives by using nanostructured coumarin-based cobalt complex as an efficient heterogeneous catalyst. The salient features of this new protocol include simple procedure, high yields, easy isolation of products without need to column chromatography and short reaction times. Also, the nanocatalyst was recovered by adding EtOH and reused five times without significant loss of its catalytic activity. Biological impact assessments of the complex were conducted by DNA cleavage ability assay and eukaryotic cell toxicity measurement. Although the complex showed single-strand DNA breakage under oxidative conditions, its high polar nature revealed a marked decrease in cell toxicity data due to the restriction on cell entry. Graphic abstract: [Figure not available: see fulltext.]
Introduction of bis-imidazolium dihydrogen phosphate as a new green acidic ionic liquid catalyst in the synthesis of arylidene malononitrile, ethyl (E)-3-(aryl)-2-cyanoacrylate and tetrahydrobenzo[b]pyran derivatives
Rahmatizadeh-Pashaki, Zahra,Daneshvar, Nader,Shirini, Farhad
, p. 2135 - 2149 (2021/02/01)
In this work, [H2-Bisim][H2PO4]2 as a novel bis-imidazole-based acidic ionic liquid has been synthesized and characterized with a variety of techniques including FT-IR, 1H, 13C, 31/su
Catalyst-free UV365-assisted synthesis of pyran annulated heterocyclic scaffolds and evaluation of their antibacterial activities
Dutta, Arup,Rahman, Noimur,Kumar, John Elisa,Rabha, Jintu,Phukan, Tridip,Nongkhlaw, Rishanlang
supporting information, p. 263 - 278 (2020/11/03)
A convenient and eco-friendly, one-pot synthetic protocol for pharmaceutically important pyran-based heterocyclic compounds is repeated herein. The reactions were carried out at room temperature in a water–ethanol solvent mixture under direct irradiation
Rapid and green synthesis of 4H-benzo[b]pyrans using triethanolamine as an efficient homogeneous catalyst under ambient conditions
Rahnamafa, Reyhaneh,Moradi, Leila,Khoobi, Mehdi
, p. 2109 - 2116 (2020/01/21)
4H-benzo[b]pyrans were obtained rapidly in high yields using triethanolamine as an efficient, eco-friendly and low-cost basic catalyst. One-pot three-component condensation reaction of a series of aldehydes, malononitrile and 1,3-diketones was performed a
Efficient Synthesis of 4H-Pyran and Spiro-Oxindole Derivatives Based on Al2O3/V2O5 Nanocomposite as Catalyst
Hassani, H.,Jahani, Z.,Poor, H. H.
, p. 491 - 497 (2020/04/27)
Abstract: A simple and eco-friendly catalytic alternative has been proposed for one-potthree-component synthesis of 4H-pyrane andspiro-oxindole derivatives, as two important classes of potentially bioactivecompounds, in the presence of a catalytic amount
Effective one-pot synthesis of tetrahydrobenzo[b]pyran derivatives using nickel Schiff-base complex immobilized on iron oxide nanoparticles
Maleki, Hossein,Rakhtshah, Jamshid,Shaabani, Behrouz
, (2020/05/22)
Nickel Schiff-base complex immobilized on silica-coated Fe3O4 as a heterogeneous catalyst was designed and characterized by different techniques, such as Fourier transform infrared (FT-IR), X-ray powder diffraction (XRD), field emiss
One-pot cascade synthesis of benzopyrans and dihydropyrano[c]chromenes catalyzed by lipase TLIM
Fu, Yajie,Lu, Zeping,Ma, Xiaolong,Fang, Ke,He, Xinyi,Xu, Huajin,Hu, Yi
, (2020/05/08)
Lipase TLIM was reported to be an efficient, commercially available and reusable catalyst for the Knoevenagel-Michael cascade reactions of aldehydes, malononitrile/ethyl cyanoacetate and 4-hydroxycoumarin/1, 3-cyclohexanedione/dimedone in aqueous DMSO. Th