The title compound, ethyl 2-(2-amino-3-ethoxycarbonyl-4H-benzo[f]chromene- 4-yl) cyanoacetate 4, has been synthesized and its crystal structure was characterized by X-ray singlecrystal diffraction.
2-Amino-4-phenyl-4H-benzo[h]chromene-3-carbonitrile | C20H14N2O | CID 3121293 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
In the title compound, C 20 H 14 N 2 O, the plane of the phenyl ring is almost normal to that of the naphthalene ring system, forming a dihedral angle of 83.15 (8)°. The 4H-pyran ring fused with the naphthalene ring system has a flattened boat conformation.In the crystal, molecules are linked by pairs of N—H⋯N hydrogen bonds, forming inversion dimers …
Synthesis, Cytotoxic Activity, Crystal Structure, DFT Studies and Molecular Docking of 3-Amino-1-(2, 5-dichlorophenyl)-8-methoxy-1H-benzo [f] chromene-2-carbonitrile. Crystals (2021) ... hydroxyapatite from green mussel shell waste combined with CoFe 2 O 4 as a heterogeneous catalyst for synthesizing 2-amino-4H-chromene derivative. The green ...
In the title compound, C21H16N2O2, the meth-oxy-benzene ring is almost perpendicular to the mean plane of the naphthalene ring system, making a dihedral angle of 83.62 (5)°. The 4H-pyran ring fused with the naphthalene ring system is almost planar [maximum deviation = 0.033 (1) Å]. In the crystal, m …
2 Simulation du procédé de broyage 2.1 Une méthode discrète avec contribution fluide Une méthode de simulation de problèmes d'interactions fluide vs. particules a été …
A series of 1 H -benzo[ f ]chromene-2-carbonitriles was synthesized and evaluated for their cytotoxic activities against MCF-7, HCT-116, and HepG-2 cancer cells. The SAR studies reported that the substitution in the phenyl ring at 1-position of 1 H -benzo[ f ]chromene nucleus with the specific group, H atom, or methoxy group at 9-position increases the …
A novel chiral magnetic nanocatalyst was prepared by the surface modification of Fe 3 O 4 magnetic nanoparticles (MNPs) with a chloropropylsilane and further by arginine to form Fe 3 O 4 @propylsilan-arginine (Fe 3 O 4 @PS-Arg). After the structural confirmation of Fe 3 O 4 @PS-Arg synthesized MNPs by Fourier transform-infrared, X-ray diffraction, field …
3-Amino-1-phenyl-1H-benzo[f]chromene-2-carbonitrile Acta Crystallogr Sect E Struct Rep Online. 2013 Mar 1;69(Pt 3):o401. doi: 10.1107/S1600536813004376. Epub 2013 Feb 20. Authors Mehmet Akkurt 1, Alan R Kennedy, Shaaban Kamel Mohamed, Sabry H H Younes, Gary J Miller. Affiliation 1 Department of Physics ...
Fast and efficient green procedure for the synthesis of benzo[5,6]Chromene derivatives and their sulfur analogues in water by organocatalyst potassium phthalimide- N -oxyl ... cyclic 1,3-diketone, and 1,3-C,N-binucleophiles such as 2-amino-1,4-naphthoquinone or 4-aminocoumarin in PEG-200 as solvent provided the styryl-linked naphthoquinone ...
Le broyage du produit s'effectue plus exactement lorsque la roche entre en contact direct avec les percuteurs et les écrans de chocs. A la fin du cycle à la sortie du broyeur, les …
Le broyage peut mettre en jeu différents mécanismes : la compression (écrasement), l'impact (percussion), la coupure (cisaillement) et l'attrition (frottement) qui impacte les …
Broyage par impact de billes. Oscillations verticales de 500 à 2000 oscill/min. Capacité : 4 microplaques de 96 puits ou 16 tubes 50 mL. Broyage rapide en moins de 3 min. …
5. Applications du broyage aux industries agroalimentaires. Dans les industries agricoles et alimentaires, le broyage est une opération unitaire très répandue. Tous les types de …
On étudie la variation de avec le pH du milieu. Bonne stabilité: de même signe et supérieur à 20 mV en valeur absolue pour chaque poudre. Mesures souvent complétées par des …
Abstract. A convenient and efficient one-pot method for the synthesis of 2-amino-tetrahydro-4H-chromene and 2-amino-4H-benzo[h]-chromene derivatives has been developed using a catalytic amount of amino-functionalized MCM-41 in aqueous medium.This efficient technique has the advantages of giving 4H-tetrahydro-chromene …
Synthesis of 6H-benzo[c]chromene as a new electron-rich building block of conjugated alternating copolymers and its application to polymer solar cells J. W. Lee, S. Bae and W. H. Jo, J. Mater. Chem. A, 2014, 2, 14146 DOI: 10.1039/C4TA02929A
The synthesis of novel 7-(4-halophenyl)-8,9-dihydro-7H-12-oxa-9,11-diaza-benzo[a]anthracene derivatives has been reported. The key intermediate 3-amino-9-chloro-1-(4-halophenyl)-1H-benzo[h]chromene-2-carbonitrile (3) was obtained by treating 4-halobenzylidenmalononitriles (1a-c) and ethyl 4-halobenzylidenmalonates (1d-f) with 4 …
Enantioselective synthesis of 3‐amino‐1‐aryl‐1 H ‐benzo[ f ]chromene‐2‐carbonitrile derivatives by Fe 3 O 4 @PS‐arginine as an efficient chiral magnetic nanocatalyst Article Full ...
For the crystal structure of the isomer of the title compound, 3-amino-1-phenyl-1H-benzo[f]chromene-2-carbonitrile, see: Akkurt et al. (2013). Experimental top. To a solution of 1-naphthol (144 mg; 1 mmol) in 10 ml absolute ethanol, an equimolar amount of benzylidene-malononitrile (154 mg; 1 mmol) was added with constant stirring. The …
Introduction. Bicyclic oxygen heterocycles-containing a benzene fusion ring at a 5,6-positioned 4H-pyran ring system designated as 4H-chromene (4H-ch) has attracted considerable attention as an important structural motif for the discovery of new drug candidates (El-Gaby et al., 2000).Four common structure motifs are formed, which …
Substituted 2-aminochromenes were synthesized by three-component condensation of aromatic aldehydes, derivatives of cyanoacetic acid, and phenols or naphthols. The molecular and crystal structure of 2-amino-3-cyano-6-hydroxy-4-phenyl-4H-benzo[f]chromene was established by X-ray diffraction analysis.
3-IMINO-3H-BENZO(F)CHROMENE-2-CARBOXAMIDE AldrichCPR; CAS Number: 2; Linear Formula: C14H10N2O2; find -R582972 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich
In continuation of our effort to identify new 1H-benzo[f ]chromene and 4Hbenzo[h]chromene derivatives and confirm their structures by X-ray analysis[18][19] [20] [21][22][23], we have now ...
The asymmetric unit of the title crystal structure is shown in the figure. Tables 1 and 2 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.
Some 3-amino-1aryl-1H-benzo[f]chromene-2-carbonitrile derivatives exhibit c-Src kinase inhibitory and antiproliferative activities [22] and show a high potency for the inhibition of hAChE [23 ...
Synthesis, Anticancer Activities and Experimental-Theoretical DNA Interaction Studies of 2-Amino-4-Phenyl-4H-benzo[h]chromene-3-carbonitrile January 2022 European Journal of Medicinal Chemistry ...
The target compound 3-amino-1-(2,5-d ichlorophenyl)-8-methoxy-1H-benzo[f]- chromene-2-carbonitrile (4) was synthesized via a reaction of 6-methoxynaphthalen-2-ol (1), 2,5-dichlorobenzaldehyde (2 ...
technology for the synthesis of 2-amino-4H-benzo[b]pyrans using amine-functionalized silica magnetic nanoparticles (NH 2 @SiO 2 @Fe 3 O 4). In the last few years, tetrahydrobenzo- ...,17 ethyl-2-(2-amino-6-bromo-3-cyano-4H-chromene-4-yl)-2-cyanoacetate (C),10 2-amino-7-(dimethylamino)-4-(4-(dimethylamino)naphthalene-
2.Becauseof l'exploitation minière et de broyage chantier de la taille du produit final d'enquêter afin de s'assurer que l'usine de test pendant au représentant mine. 3. Pour le …
The applicability of the LCMNP material was evaluated in a three-component coupling reaction between a nucleophile, salicylaldehyde and malononitrile as the catalyst for one-pot synthesis of 2-amino-4H-chromene-3-carbonitrile derivatives. The catalyst system showed high catalytic activity in this process and target products were obtained in ...
2-AMINO-4-PHENYL-4H-BENZO(H)CHROMENE-3-CARBONITRILE AldrichCPR; CAS Number: 11; Linear Formula: C20H14N2O; find -R424196 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich ... 3-AMINO-1-(3-HYDROXY-PHENYL)-1H-BENZO(F)CHROMENE-2-CARBONITRILE. …
Reactions performed in the presence of nano-CuFe 2 O 4 as catalyst and water as solvent afforded the corresponding 2-amino-4H-chromene-4-carboxylates and 2-amino-5H-pyrano[3,2-c]chromene-4-carboxylates in presentable yields (Scheme 6). The nanocatalyst can be reused for six cycles without any significant reduction in product yield.
Et donc, cette technique de synthèse rapide peut être considérée comme une méthode prometteuse pour la préparation de nanoparticules sphériques d'argent de haute pureté …
