scholarly journals 1, 3, 5-Tris (2-hydroxyethyl) Isocyanurate Functionalized SBA-15 (THEIC-SBA-15): as a Novel Heterogeneous Nano-Catalyst for the One-Pot Three-Component Synthesis of Tetrahydrobenzo [b] Pyrans in Water

2020 ◽  
Vol 10 (6) ◽  
pp. 6706-6717
Keyword(s):  
Electron Microscopy ◽  
Low Cost ◽  
Ethyl Cyanoacetate ◽  
Reaction Times ◽  
Hexagonal Structure ◽  
Reaction Conditions ◽  
One Pot ◽  
Transition Electron Microscopy ◽  
Nano Catalyst ◽  
The One

1, 3, 5-Tris (2-hydroxyethyl) isocyanurate functionalized SBA-15 is used as a novel, highly efficient, and recyclable heterogeneous nano-catalyst for the one-pot 3-component synthesis of tetrahydro benzo [b] pyran derivatives. These unique derivatives were synthesized through the condensation reactions of the enolizable compounds, different aldehydes, and malononitrile (or ethyl cyanoacetate) under the mild reaction conditions, in the short reaction times, and gives excellent yields in the refluxing H2O as a green solvent. The accuracy of synthesizing functionalized SBA-15 was confirmed with FT-IR spectroscopy. Then the catalyst was characterized by scanning electron microscopy (SEM), transition electron microscopy (TEM), and surface area analysis (BET). TEM images demonstrated that the synthesized catalyst had a hexagonal structure. Simplicity in the operation, rapidity, high yields, low cost, mild reaction conditions, catalyst with low loading, evading the usage of toxic change metals, stability, and the catalyst reusability are the main advantages of the proposed protocol.

Rapid and Green One-Pot Synthesis of Novel 2-(4-Hydroxy-2-oxo-2H-chromen-3-yl)-2-(arylamino)-1H-indene-1,3(2H)-diones

2021 ◽  
Vol 18 ◽  
Author(s):  
Abolfazl Olyaei ◽  
Zahra Ghahremany ◽  
Madieh Sadeghpour
Keyword(s):  
Aromatic Amines ◽  
Low Cost ◽  
Guanidine Hydrochloride ◽  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields ◽  
Work Up

: A green and efficient protocol was developed for the one-pot three-component synthesis of novel 2-(4-hydroxy-2-oxo-2H-chromen-3-yl)-2-(arylamino)-1H-indene-1,3(2H)-dione derivatives by the reaction of 4-hydroxycoumarin, ninhydrin and aromatic amines in the presence of guanidine hydrochloride as an organocatalyst under solvent-free conditions. The present approach offers several advantages such as low cost, simple work-up, short reaction times, chromatography-free purification, high yields and greener conditions.

Tributylhexadecylphosphonium bromide: an efficient reagent system for the one-pot synthesis of 2,4,5-trisubstituted imidazoles

2015 ◽  
Vol 21 (2) ◽  
Author(s):  
Mohammad Heidari ◽  
Mohsen Rezaei ◽  
Rashid Badri
Keyword(s):  
Cost Effectiveness ◽  
Aromatic Aldehyde ◽  
Ammonium Acetate ◽  
Reaction Times ◽  
Environmentally Benign ◽  
Reaction Conditions ◽  
One Pot ◽  
One Pot Synthesis ◽  
The One ◽  
Efficient Reagent

AbstractThe reaction of benzil, an aromatic aldehyde, and ammonium acetate in ethanol at reflux in the presence of tributylhexadecylphosphonium bromide as catalyst affords a 2,4,5-trisubstituted imidazole. The present methodology offers several advantages over the literature methods, including excellent yields, shorter reaction times, environmentally benign milder reaction conditions, cost-effectiveness of catalyst, easy workup, and purification of products by nonchromatographic methods.

Potassium phthalimide-catalysed one-pot multi-component reaction for efficient synthesis of amino-benzochromenes in aqueous media

2014 ◽  
Vol 68 (8) ◽  
Author(s):  
Hamzeh Kiyani ◽  
Fatemeh Ghorbani
Keyword(s):  
Organic Solvent ◽  
Aqueous Media ◽  
Ethyl Cyanoacetate ◽  
Reaction Times ◽  
Aromatic Aldehydes ◽  
Environmentally Benign ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
High Yields

Abstract2-Amino-4-aryl-4H-benzo[h]chromenes and 3-amino-1-aryl-1H-benzo[f]chromenes were prepared by treating cyano-methylene compounds (malononitrile or ethyl cyanoacetate), substituted aromatic aldehydes, and naphtholic compounds in the presence of potassium phthalimide as a green, mild, efficient, and commercially available organocatalyst in aqueous media. The procedure was readily conducted and affords remarkable advantages such as safety, short reaction times, environmentally benign milder reaction conditions, no organic solvent required, and high yields.

CuO Nanoparticles: A Mild and Efficient Reusable Catalyst for the One-Pot Synthesis of 4-amino-5-pyrimidinecarbonitriles under Aqueous Conditions

2012 ◽  
Vol 326-328 ◽  
pp. 372-376
Author(s):  
Seyed Javad Ahmadi ◽  
Sodeh Sadjadi ◽  
Morteza Hosseinpour
Keyword(s):  
Efficient Method ◽  
Reaction Times ◽  
Cuo Nanoparticles ◽  
Reusable Catalyst ◽  
Reaction Conditions ◽  
One Pot ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
The One ◽  
Aqueous Conditions

An efficient method for the synthesis of 4-amino-5-pyrimidinecarbonitriles by three-component reaction of malononitrile, aldehydes and N-unsubstituted amidines, under aqueous conditions, using CuO nanoparticles as catalyst is reported. The protocol offers advantages in terms of higher yields, short reaction times, and mild reaction conditions, with reusability of the catalyst.

scholarly journals Benign Methodology and Efficient Catalysis for the One-Pot Multicomponent Synthesis of Dihydropyrimidinones and Thiones: A New Key for Old Lock

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Parvez Ali ◽  
Naziyanaz Pathan ◽  
Taibi Ben Hadda
Keyword(s):  
Reaction Times ◽  
Aromatic Aldehydes ◽  
Cuprous Chloride ◽  
Atom Economy ◽  
Present Communication ◽  
Multicomponent Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Simple Protocol ◽  
The One

In the present communication, under the influence of microwaves, cuprous chloride has been demonstrated to be safe, mild, efficient, and inexpensive catalyst for the Biginelli discovered multicomponent reaction (MCR) between aromatic aldehydes, urea/substituted urea, and ethyl acetoacetate to produce structurally diverse dihydropyrimidin-2(1H)-ones (DHPMs) and thiones in an ecofriendly solvent-free protocol. The practical and simple protocol led to excellent yields of the dihydropyrimidin-2(1H)-one derivatives under mild reaction conditions and within short span of reaction times with easy reaction workup by maintaining excellent atom economy.

scholarly journals New Approach for the One-Pot Synthesis of 1,3,5-Triazine Derivatives: Application of Cu(I) Supported on a Weakly Acidic Cation-Exchanger Resin in a Comparative Study

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3586 ◽  
Author(s):  
Eva Havránková ◽  
Jozef Csöllei ◽  
Pavel Pazdera
Keyword(s):  
Biological Activity ◽  
Cation Exchanger ◽  
Low Cost ◽  
Reaction Times ◽  
Synthetic Methods ◽  
One Pot ◽  
New Approach ◽  
Acidic Cation Exchanger ◽  
Triazine Derivatives ◽  
The One

An efficient and simple methodology for Ullmann Cu(I)-catalyzed synthesis of di- and trisubstituted 1,3,5-triazine derivatives from dichlorotriazinyl benzenesulfonamide and corresponding nucleophiles is reported. Cations Cu(I) supported on macroporous and weakly acidic, low-cost industrial resin of polyacrylate type were used as a catalyst. The reaction times and yields were compared with traditional synthetic methods for synthesis of substituted 1,3,5-triazine derivatives via nucleophilic substitution of chlorine atoms in dichlorotriazinyl benzenesulfonamide. It was found that Ullmann-type reactions provide significantly shortened reaction times and, in some cases, also higher yields. Finally, trisubstituted s-triazine derivatives were effectively prepared via Ullmann-type reaction in a one-pot synthetic design. Six new s-triazine derivatives with potential biological activity were prepared and characterized.

scholarly journals A New Supported Manganese-Based Coordination Complex as a Nano-Catalyst for the Synthesis of Indazolophthalazinetriones and Investigation of Its Antibacterial Activity

2021 ◽  
Author(s):  
maryam ariannezhad ◽  
davood habibi ◽  
somayyeh heydari ◽  
vahideh khorram Abadi
Keyword(s):  
Condensation Reaction ◽  
Antibacterial Properties ◽  
Reaction Times ◽  
Coordination Complex ◽  
Bacterial Strains ◽  
Fast Reaction ◽  
One Pot ◽  
Nano Catalyst ◽  
Ft Ir ◽  
The One

Abstract A new magnetic supported manganese-based coordination complex (Fe3O4@SiO2@CPTMS@MBOL@ Mn) was prepared in consecutive stages, characterized via various techniques (VSM, SEM, TEM, XRD, FT-IR, EDX, TG-DTA and ICP) and used as a capable nano-catalyst for the fast and green synthesis of divers 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-triones in a simple and efficient procedure from the one pot three-component condensation reaction of aldehydes, dimedone and phthalhydrazide in refluxed ethanol in excellent yields and fast reaction times. The Mn catalyst can be recycled and reused without notable loss of the catalytic activity. Also, the antibacterial properties of the Mn supported nano-catalyst were studied against a number of gram-positive and gram-negative bacterial strains.

A highly efficient and green approach for the synthesis of pyrimido[4,5-b]quinolines using N,N-diethyl-N-sulfoethanaminium chloride

2021 ◽  
Vol 76 (2) ◽  
pp. 85-90
Author(s):  
Abdolkarim Zare ◽  
Manije Dianat
Keyword(s):  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Catalyst Amount ◽  
Green Protocol ◽  
Highly Efficient ◽  
Green Approach ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields

Abstract A highly efficient and green protocol for the synthesis of pyrimido[4,5-b]quinolines has been described. The one-pot multicomponent reaction of dimedone with arylaldehydes and 6-amino-1,3-dimethyluracil in the presence of N,N-diethyl-N-sulfoethanaminium chloride ([Et3N–SO3H][Cl]) as an ionic liquid (IL) catalyst under solvent-free conditions afforded the mentioned compounds in high yields and short reaction times. Our protocol is superior to many of the reported protocols in terms of two or more of these factors: the reaction times, yields, conditions (solvent-free versus usage of organic solvents), temperature and catalyst amount.

scholarly journals A New Supported Manganese-Based Coordination Complex as a Nano-Catalyst for the Synthesis of Indazolophthalazinetriones and Investigation of Its Antibacterial Activity

Chemistry ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 783-799
Author(s):  
Maryam Ariannezhad ◽  
Davood Habibi ◽  
Somayyeh Heydari ◽  
Vahideh Khorramabadi
Keyword(s):  
Antibacterial Activity ◽  
Simple Procedure ◽  
Condensation Reaction ◽  
Antibacterial Properties ◽  
Coordination Complex ◽  
Bacterial Strains ◽  
One Pot ◽  
Nano Catalyst ◽  
Ft Ir ◽  
The One

A new magnetic supported manganese-based coordination complex (Fe3O4@SiO2@CPTMS@MBOL@ Mn) was prepared in consecutive stages and characterized via various techniques (VSM, SEM, TEM, XRD, FT-IR, EDX, TG-DTA, and ICP). To evaluate its application, it was used for synthesis of divers Indazolophthalazinetriones in a simple procedure via the one-pot three-component condensation reaction of aldehydes, dimedone, and phthalhydrazide in ethanol under reflux conditions. The Mn catalyst can be recycled without any noticeable loss in catalytic activity. Additionally, the antibacterial properties of the nano-catalyst were studied against some bacterial strains.

scholarly journals Solvothermal Synthesis of Mn3O4Nanoparticle/Graphene Sheet Composites and Their Supercapacitive Properties

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Y. F. Liu ◽  
G. H. Yuan ◽  
Z. H. Jiang ◽  
Z. P. Yao
Keyword(s):  
Electron Microscopy ◽  
Graphene Sheet ◽  
Low Cost ◽  
High Specific Capacitance ◽  
Ethanol Solution ◽  
Diffraction Field ◽  
Electrochemical Performances ◽  
One Pot ◽  
Long Term Stability ◽  
Transmission Electron

Mn3O4nanoparticle/graphene sheet (GM) composites were synthesized via a one-pot and low-cost solvothermal process in an ethanol solution. The as-prepared materials were characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Results showed that the nanosized Mn3O4particles had tetragonal hausmannite structure and were successfully loaded on the graphene sheets. Moreover, the electrochemical performances of GM composites produced by different mass percents of Mn2+/graphite oxide (GO) were evaluated by means of cyclic voltammetry and galvanostatic charge-discharge studies. The composite prepared with Mn2+/GO mass percent of 10 : 90 showed a high specific capacitance of 245 F/g at 5 mV/s in the 6 M KOH solution and better long-term stability along with 81% of its initial capacitance after 1200 cycles at 0.5 A/g.

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