نمایش نتایج جستجو برای
کلمات کلیدی: substituted
موارد یافت شده: 52
1 - Cu/N-doped carbon spheres derived from soybean flour as an active green nanocomposite for the synthesis of 1,4-disubstituted 1H-1,2,3-triazole derivatives (چکیده)2 - Immobilized Cu(0) nanoparticles on montmorillonite-modified with benzalkonium chloride (MMT-BAC@Cu(0)): as an eco-friendly and proficient heterogeneous nano-catalyst for green synthesis of 5-substituted 1H-tetrazoles (چکیده)
3 - Monosubstituted Keggin as heterogeneous catalysts for solvent-free cyanosilylation of aldehydes and ketones (چکیده)
4 - Extraction and preconcentration of organophosphorus pesticides from water samples and fruit juices utilizing hydroxyapatite/Fe3O4 nanocomposite (چکیده)
5 - Magnetic horsetail plant ash (Fe3O4@HA): a novel, natural and highly efficient heterogeneous nanocatalyst for the green synthesis of 2,4,5-trisubstituted imidazoles (چکیده)
6 - The effect of solvation in torquoselectivity: ring opening of monosubstituted cyclobutenes (چکیده)
7 - New phosphonium molybdate‐promoted green, fast and selective catalytic procedure for the synthesis of trisubstituted imidazoles (چکیده)
8 - 2-Aminoethanesulfonic acid immobilized on epichlorohydrin functionalized Fe3O4@WO3 (Fe3O4@WO3-EAE-SO3H (III)): A heterogeneous and reusable nanocatalyst for synthesis of α,α\\\\\\\'-bis (substituted-benzylidene) cycloalkanones in solvent-free conditions (چکیده)
9 - A new effective nano-adsorbent and antibacterial material of hydroxyapatite (چکیده)
10 - Substituted troponimines: when aromatization of the conjugate acid leads to very strong neutral organic superbases (چکیده)
11 - Tautomerism, molecular structure, intramolecular hydrogen bond, and tautomery equilibrium of α-methyl and ethyl substituted 4-amino-3-penten-2-one; A theoretical study (چکیده)
12 - Palladium Catalyzed, Multicomponent Synthesis of Fused-Ring Pyrroles from Aryl Iodides, Carbon Monoxide, and Alkyne-Tethered Imines (چکیده)
13 - 2-Aminoethanesulfonic acid immobilized on epichlorohydrin functionalized Fe3O4@WO3: a novel magnetically recyclable heterogeneous nanocatalyst for the green one-pot synthesis of 1-Substituted-1H-1,2,3,4-tetrazoles in water (چکیده)
14 - Cu(II) immobilized on Fe3O4@Agarose nanomagnetic catalyst functionalized with ethanolamine phosphate-salicylaldehyde Schiff base: A magnetically reusable nanocatalyst for preparation of 2-substituted imidazolines, oxazolines and thiazolines (چکیده)
15 - Heteropolyacid anchored on SBA‑15 functionalized with 2‑aminoethyl dihydrogen phosphate: a novel and highly efficient catalyst for one‑pot, three‑component synthesis of trisubstituted 1,3‑thiazoles (چکیده)
16 - Cu(II) immobilized on guanidinated epibromohydrinfunctionalized γ‐Fe2O3@TiO2 (γ‐Fe2O3@TiO2 ‐EG‐Cu(II)): A highly efficient magnetically separable heterogeneous nanocatalyst for one‐pot synthesis of highly substituted imidazoles (چکیده)
17 - Rapid, Green, And Catalyst‑Free One‑ Pot Three‑Component Syntheses Of 5‑ substituted 1H‑tetrazoles In Magnetized Water (چکیده)
18 - 2-AminoethanesulfonicAcid Immobilized on Epichlorohydrin Functionalized Fe3O4@WO3(Fe3O4@WO3-EAE-SO3H): A Novel Magnetically Recyclable Heterogeneous Nanocatalystfor the Green One-Pot Synthesisof 1-Substituted-1H-1,2,3,4-Tetrazolesin Water (چکیده)
19 - Direct access to stabilized CuI using cuttlebone as a natural-reducing support for efficient CuAAC click reactions in water (چکیده)
20 - Magnetically separable Fe3O4@chitin as an ecofriendly nanocatalyst with high efficiency for green synthesis of 5-substituted-1H-tetrazoles under solvent-free conditions (چکیده)
21 - CuII immobilized on guanidinated epibromohydrin functionalized g-Fe2O3@TiO2 (g-Fe2O3@TiO2-EGCuII): a novel magnetically recyclable heterogeneous nanocatalyst for the green one-pot synthesis of 1,4-disubstituted 1,2,3-triazoles through alkyne–azide cycloaddition in water (چکیده)
22 - An efficient and convenient synthesis of N-substituted amides under heterogeneous condition using Al(HSO4)3 via Ritter reaction (چکیده)
23 - Synthesis of 2,4,5-triaryl-1H-imidazoles using a potent, green and reusable nano catalyst (FHS/SiO2) (چکیده)
24 - Expanded perlite: an inexpensive natural efficient heterogeneous catalyst for the green and highly accelerated solvent-free synthesis of 5- substituted-1H-tetrazoles using [bmim]N3 and nitriles† (چکیده)
25 - A rapid metal free synthesis of 5-substituted-1Htetrazoles using cuttlebone as a natural high effective and low cost heterogeneous catalyst (چکیده)
26 - Synthesis of new multi-functionalised 1,1’-carbonylbispyrazole derivatives (چکیده)
27 - Deep eutectic solvent for multi-component reactions:a highly efficient and reusable acidic catalystfor synthesis of 2,4,5-triaryl-1H-imidazoles (چکیده)
28 - Cu(II) immobilized on aminated epichlorohydrin activated silica (CAES): as a new, green and efficient nanocatalyst for preparation of 5-substituted-1Htetrazoles† (چکیده)
29 - Synthesis of novel heterocycle systems: 6,8-dimethyl-2-(methylsulfanyl-4-amino-substituted pyrimido[4′,5′:3,4]pyrazolo[1,5-a]pyrimidine and 9,11-dimethyl-5-(methylsulfanyl)pyrimido[2′,1′:5,1]pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyrimidine (چکیده)
30 - 1,3-Dipolar Cycloaddition Reactions between Ethyl Diazoacetate and Substituted Alkynes: A Density Functional Theory Study (چکیده)
31 - Caesium iodide as an efficient catalyst for synthesis of N‑substituted azepines via tandem Michael addition and cyclisation under aqueous conditions (چکیده)
32 - خواص ساختاری و مغناطیسی نانو ذرات هگزافریت استرانسیم جانشانشی شده با کرم (چکیده)
33 - A convenient one-pot method for the synthesis of highly functionalized 1,3-oxazole (چکیده)
34 - One-pot solvent free synthesis of someindolylmethane amine derivativesbyFe(HSO4)3 as a recycable catalyst (چکیده)
35 - Synthesis of new pyrrolizine derivatives via ring annulation under green conditions (چکیده)
36 - A facile approach for the synthesis of new derivatives of pyrazolo[4,3-e][1,2,4]triazolo[4,3-c]pyrimidine (چکیده)
37 - Green and Selective Synthesis ofN-Substituted Amides using Water Soluble Porphyrazinato Copper(II) Catalyst (چکیده)
38 - Surface modification based on Si-0 and Si-C sublayers and a series of N-substituted acrylamide top-layers for capillary electrophoresis (چکیده)
39 - Novel synthesis of a,a-bis(substituted-benzylidene) alkanone in the presence of niobium pentachloride under solvent free condition (چکیده)
40 - Three-component synthesis of highly substituted pyridines catalyzed by ZnO Nanoparticles in Ionic Liquid Media (چکیده)
41 - Synthesis of Novel Substituted 4H-furo[3,4-c]chromen-4-one derivatives (چکیده)
42 - A novel approach for the synthesis of 5-substituted-1H-tetrazoles (چکیده)
43 - A novel and efficient synthesis of 3,3-disubstituted indol-2-ones via Passerini three-component reactions in the presence of 4 Å molecular sieves (چکیده)
44 - Synthesis of 14-Aryl- and Alkyl-14H-dibenzo[a, j]xanthenes Catalyzed by Silica-supported Ferric Hydrogensulfate (چکیده)
45 - Ferric Hydrogensulfate [Fe(HSO4)3] As a Reusable Heterogeneous Catalyst for the Synthesis of 5-Substituted-1H-Tetrazoles and Amides (چکیده)
46 - Comparative Gas Chromatography of Halides using different substituted Phenylboronic acids as derivatizing reagents (چکیده)
47 - Efficient one-pot synthesis of 1,3-diaryl-3H-benzo[f]chromenes using ferric hydrogensulfate (چکیده)
48 - synthesis and characterization of a series of I ,3,5- trisubstituted-2-pyrazolinc derivatives using methanoic acid under thermal condition (چکیده)
49 - Sandwich-type Uranium-Substituted of Bismuthotungstate: Synthesis and Structure Determination of [Na(UO2)2(H2O)4(BiW9O33)2]13 (چکیده)
50 - Differential Pulse Polarographic Study of Mercury Complexes with Some Benzo-Substituted Macrocyclic Diamides In Binary Nitromethane + Dimethylformamide Mixtures (چکیده)
51 - H-Y-zeolites induced heterocyclization: Highly efficient synthesis of substituted-quinazolin-4(3H) o (چکیده)
52 - Effect of substituted IIIB transition metals on electronic properties of indium oxide by first‐principles calculations (چکیده)
