89809-76-7Relevant articles and documents
One-pot synthesis of 2-amino-3-cyano-4H-pyrans and pyran-annulated heterocycles using sodium citrate as an organo-salt based catalyst in aqueous ethanol
Dutta, Arup,Nongkhlaw, Rishanlang,Phanrang, Pynskhemborlang T.,Thongni, Aiborlang
supporting information, (2021/11/09)
Sodium citrate as a highly efficient catalyst is developed for the synthesis of functionalized 2-amino-3-cyano-4H-pyrans and pyran-annulated heterocycles. This method involves a one-pot three-component reaction of aromatic aldehydes, malononitrile and 1,3
Novel pyrano-triazolo-pyrimidine derivatives as anti- α-amylase agents: Synthesis, molecular docking investigations and computational analysis
Hajlaoui, Amel,Laajimi, Maha,Znati, Mansour,Jannet, Hichem Ben,Romdhane, Anis
, (2021/04/09)
A novel series of pyranotriazolopyrimidine derivatives 3a-j was synthesized and characterized by 1H NMR, 13C NMR, and HRMS experimental data. The synthesized compounds were assessed for their inhibitory potential on the α-amylase enz
Novel biocompatible core/shell Fe3O4?NFC?Co(ii) as a new catalyst in a multicomponent reaction: An efficient and sustainable methodology and novel reusable material for one-pot synthesis of 4: H -pyran and pyranopyrazole in aqueous media
Bagherzade, Ghodsieh,Eshghi, Hossein,Kargar, Pouya Ghamari
, p. 37086 - 37097 (2020/10/27)
Today, due to the developing need for inexpensive catalysts, recyclable magnetic nanocatalysts immobilized on polysaccharides possess many advantages over classical heterogeneous catalysts. However, cellulose has been an appealing material in catalysis sc
Ferric Sulfasalazine Sulfa Drug Complex Supported on Cobalt Ferrite Cellulose; Evaluation of Its Activity in MCRs
Rostamizadeh, Shahnaz,Daneshfar, Zahra,Khazaei, Ali
, p. 2091 - 2114 (2020/01/31)
Abstract: The green and nano catalyst was simply prepared through the reaction of ferric sulfasalazine with nanomaterial CoFe2O4-cellulose as a magnetic biopolymer surface. This novel heterogeneous organometallic catalyst was charact
Preparation and characterization of Ca-modified Co/Al2O3 and its catalytic application in the one-pot synthesis of 4H-pyrans
Khaledi, Sakineh,Rajabi, Mahboobe,Momeni, Ahmad Reza,Samimi, Heshmat Allah,Albadi, Jalal
, p. 3109 - 3123 (2020/04/16)
Abstract: In this research, Co/Ca–Al2O3 composite as a heterogeneous nanocatalyst was synthesized by the co-precipitation method. The effect of Ca addition on the textural properties and the catalytic activity was investigated. The r
A Novel Biopolymer-based Nanomagnetic Catalyst for the Synthesis of 4H-pyran and Tetrahydro-4H-chromene Derivatives
Marjani, Ahmad Poursattar,Mohammadzadeh, Amin,Zamani, Asghar
, p. 55 - 63 (2020/09/18)
In the present study, we have designed and synthesized a new magnetically recoverable, nanocatalyst of Ag/Fe3O4?starch. The successful synthesis and the structure of the nanocatalyst were confirmed and evaluated with several analytical techniques including XRD, EDX, VSM, FT-IR, TEM and TGA. The impact and efficiency of Ag/Fe3O4?starch were successfully investigated in the one-pot synthesis of desired 4H-pyrans and tetrahydro-4H-chromenes using three-component condensation of various aldehydes, malononitrile, and 1,3-diketoesters or cyclic 1,3-diketones. The magnetic nanocatalyst was easily recovered and reused with high catalytic activity even after up to five runs.
Efficient Three-Component One-Pot Synthesis of 4H-Pyrans
Malviya,Kala,Sharma,Singh
, p. 686 - 693 (2019/07/17)
Clean, practical, and efficient electrochemical synthesis of pharmaceutically relevant 4H-pyran derivatives by one-pot three-component combination of an aryl aldehyde, malononitrile, and a dicarbonyl compoundis developed. The synthesis is performed in eth
Synthesis, biological evaluation and molecular docking study of 1,2,3-1H-triazoles having 4H-pyrano[2,3-d]pyrimidine as potential Mycobacterium tuberculosis protein tyrosine phosphatase B inhibitors
Thanh, Nguyen Dinh,Hai, Do Son,Ha, Nguyen Thi Thu,Tung, Do Tien,Le, Cao Thi,Van, Hoang Thi Kim,Toan, Vu Ngoc,Toan, Duong Ngoc,Dang, Le Hai
supporting information, p. 164 - 171 (2018/12/13)
Some heterocycles, namely 2-amino-4H-pyran-3-carbonitriles, were synthesized in a three-component reaction from substituted benzaldehydes, malononitrile, and ethyl acetoacetate. These heterocycles have been converted subsequently into 4H-pyrano[2,3-d]pyri
New application of decaniobate salt as basic solid in the synthesis of 4H-pyrans by microwave assisted multicomponent reactions
Gutierrez, Luisa F.,Nope, Eliana,Rojas, Hugo A.,Cubillos, Jairo A.,Sathicq, ángel G.,Romanelli, Gustavo P.,Martínez, José J.
, p. 5559 - 5568 (2018/05/03)
This study focuses on the search of new applications of polyoxometalates known as decaniobate ions [Nb10O28]6?. The decaniobates can be used as basic solid catalysts in multicomponent reactions to obtain good yields to 4H-pyrans (> 95%) under microwave radiation and solvent-free conditions, using several aldehydes with different electron-withdrawing or electron donor substituents. The synthesis of (TMA)6 [Nb10O28]6H2O was performed following a simple protocol (HPNb), which was modified to decrease the number of hexaniobate species that are formed as impurities (HPNb-HF).
Synthesis and structure elucidation of a novel mixed-ligand Cu(II) Schiff base complex and its catalytic performance for the synthesis of 2-amino-4H-pyrans and tetrahydro-4H-chromenes
Ebrahimipour, S. Yousef,Khosravan, Mehrji,Castro, Jesus,Khajoee Nejad, Fatemeh,Dusek, Michal,Eigner, Vaclav
, p. 73 - 80 (2018/03/21)
A novel quinazoline Schiff base ligand, 3-((5-bromo-2-hydroxy-3-methoxybenzylidene)amino)-2-methylquinazolin-4(3H)-one [HL] and its mixed-ligand Cu(II) complex [Cu(L′)(Imi)], [L′] = 2-acetamido-N-(5-bromo-2-oxidobenzylidene) benzohydrazonate, [Imi] = imid
