The novel acid-base magnetic recyclable catalyst prepared through carbon disulfide trapping process: Applied for green, one-pot, and efficient synthesis of 2,3-dihydroquinazolin-4 (1H) -ones and bis(indolyl)methanes in large-scale

2021 ◽  
Vol 506 ◽  
pp. 111532
Author(s):  
Fatemeh Mohammadi Metkazini ◽  
Zahra Khorsandi ◽  
Akbar Heydari
Keyword(s):  
Carbon Disulfide ◽  
Large Scale ◽  
Recyclable Catalyst ◽  
The Novel ◽  
Efficient Synthesis ◽  
Acid Base ◽  
One Pot ◽  
Trapping Process ◽  
Magnetic Recyclable

scholarly journals Greener and efficient one-pot synthesis of novel multi-substituted 3-(4,5-diphenyl-1H-imidazol-2-yl)-1H-indole derivatives by using recyclable catalyst under microwave irradiation

2021 ◽  
pp. 261-270 ◽  
Author(s):  
Narendra Nirwan ◽  
Chandresh Pareek
Keyword(s):  
Cost Effectiveness ◽  
Microwave Irradiation ◽  
Ammonium Acetate ◽  
Mass Spectrometric ◽  
Recyclable Catalyst ◽  
The Novel ◽  
Indole Derivatives ◽  
Time Cost ◽  
One Pot ◽  
Short Reaction Time

The novel class of multi-substituted indolylimidazole derivatives series substituted 3-(4,5-diphenyl-1H-imidazol-2-yl)-1H-indole and substituted 5-bromo-3-(4,5-diphenyl-1H-imidazol-2-yl)-1H-indole was synthesized utilising a green and efficient one-pot four components condensation of indole-3-carbaldehyde, benzil, ammonium acetate and various amines under microwave irradiation using Amberlyst A-15 as a recyclable catalyst. The catalyst Amberlyst A-15 has recovered from the reaction mixture and reused repeatedly for the next reaction. The key advantage of this process involves eco-friendly, very short reaction time, cost-effectiveness with the reusability of catalyst, easy workup, and purification of the product with excellent yields. FTIR, 1HNMR and Mass spectrometric studies analyzed and established the structures of all newly synthesized compounds.

One-pot NHC-assisted access to 2,3-dihydropyrimido[4,5-d]pyrimidin-4(1H)-ones

RSC Advances ◽  
2014 ◽  
Vol 4 (67) ◽  
pp. 35629-35634 ◽  
Author(s):  
Mingxing Liu ◽  
Jiarong Li ◽  
Shu Chen ◽  
Danfei Huang ◽  
Hongxin Chai ◽  
...  
Keyword(s):  
Reaction Synthesis ◽  
The Novel ◽  
Efficient Synthesis ◽  
One Pot ◽  
Highly Efficient ◽  
Novel Method

An efficient N-heterocyclic carbene-assisted one-pot reaction synthesis of 2,3-dihydropyrimido[4,5-d] pyrimidin-4(1H)-ones from 2-(ethoxymethylene)malononitrile, guanidines (or amidines) and ketones (or aldehyde) has been developed. The novel method provides a highly efficient synthesis of pyrimido[4,5-d]pyrimidinering from materials with no heterocyclic structures.

Magnetic nanoparticles-supported tungstic acid (MNP-TA): an efficient magnetic recyclable catalyst for the one-pot synthesis of spirooxindoles in water

RSC Advances ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 2223-2230 ◽  
Author(s):  
Ali Khalafi-Nezhad ◽  
Masoumeh Divar ◽  
Farhad Panahi
Keyword(s):  
Magnetic Nanoparticles ◽  
Tungstic Acid ◽  
Recyclable Catalyst ◽  
One Pot ◽  
One Pot Synthesis ◽  
Catalytic Application ◽  
Magnetically Separable Catalyst ◽  
Magnetically Separable ◽  
The One ◽  
Magnetic Recyclable

This paper reports the preparation, characterization and catalytic application of a novel, magnetically separable catalyst consisting of tungstic acid supported on silica coated magnetic nanoparticles.

Acid-Base Bifunctional Metal-Organic Frameworks: Green Synthesis and Application in One-Pot Glucose to 5-HMF Conversion

NANO ◽  
2018 ◽  
Vol 13 (11) ◽  
pp. 1850132 ◽  
Author(s):  
Yunlei Zhang ◽  
Pei Jin ◽  
Minjia Meng ◽  
Lin Gao ◽  
Meng Liu ◽  
...  
Keyword(s):  
Active Sites ◽  
Large Scale ◽  
Direct Synthesis ◽  
Metal Organic Frameworks ◽  
Acid Base ◽  
One Pot ◽  
Ring Opening Reaction ◽  
Metal Organic ◽  
Base Strength ◽  
Viable Approach

The direct synthesis of metal-organic frameworks (MOFs) with acidic and basic active sites is challenging due to the introduction of functional groups by post-functionalization method often jeopardize the framework integrity. Herein, we report the direct synthesis of acid-base bi-functional MOFs with tuning acid-base strength. Employing modulated hydrothermal (MHT) approach, microporous MOFs named UiO-66-NH2 was prepared. Through the ring-opening reaction of 1,3-propanesultone with amino group, UiO-66-NH2-SO3H-type catalysts can be obtained. The synthesized catalysts were well characterized and their catalytic performances were evaluated in one-pot glucose to 5-HMF conversion. Results revealed the acid-base bi-functional catalyst possessed high activity and excellent stability. This work provides a general and economically viable approach for the large-scale synthesis of acid-base bi-functional MOFs for their potential use in catalysis field.

Efficient synthesis of zirconium poly(styrene-phenylvinylphosphonate)phosphate-supported proline as a recyclable catalyst for direct asymmetric aldol reactions in water

RSC Advances ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 3168-3176 ◽  
Author(s):  
Chuanlong Wu ◽  
Xiaoqin Long ◽  
Xiangkai Fu ◽  
Guangwei Wang ◽  
Zakaria. A. Mirza
Keyword(s):  
Large Scale ◽  
Recyclable Catalyst ◽  
Aldol Reactions ◽  
Efficient Synthesis ◽  
Asymmetric Aldol

A completely non-chromatographic and highly large-scale adaptable synthesis of zirconium poly(styrene-phenylvinylphosphonate)phosphate-supported l-proline (ZrPS-PVPA-Pr) has been developed in only three steps overall.

The Efficient Synthesis of 1,3-Diallyloxy-2-Propanol without Solvent

2011 ◽  
Vol 311-313 ◽  
pp. 2106-2109
Author(s):  
Xi Mei Liu ◽  
Yu Hu ◽  
Li Hua Feng
Keyword(s):  
Allyl Alcohol ◽  
Large Scale ◽  
Room Temperature ◽  
Low Cost ◽  
High Yield ◽  
Scale Production ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Large Scale Production

An efficient and practical protocol for the preparation of 1,3-diallyloxy-2-propanol has been developed by one-pot reaction between epichlorohydrin and allyl alcohol in the presence of KOH without solvent at room temperature. This preliminary approach provides an environmentally-friendly synthetic route to 1,3-diallyloxy-2-propanol with many advantages, i. e., low cost, high yield, easy purification, mild reaction conditions, and large scale production.

Covalent Atomic Bridges Enable Unidirectional Enhancement of Electronic Transport in Aligned Carbon Nanotubes

2019 ◽  
Author(s):  
Mingguang Chen ◽  
Wangxiang Li ◽  
Anshuman Kumar ◽  
Guanghui Li ◽  
Mikhail Itkis ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Transport ◽  
Large Scale ◽  
The Novel ◽  
Electrical Measurements ◽  
Metal Atoms ◽  
Aligned Carbon Nanotubes ◽  
Transport Channels ◽  
Walled Carbon Nanotubes ◽  
Bulk Structures

<p>Interconnecting the surfaces of nanomaterials without compromising their outstanding mechanical, thermal, and electronic properties is critical in the design of advanced bulk structures that still preserve the novel properties of their nanoscale constituents. As such, bridging the p-conjugated carbon surfaces of single-walled carbon nanotubes (SWNTs) has special implications in next-generation electronics. This study presents a rational path towards improvement of the electrical transport in aligned semiconducting SWNT films by deposition of metal atoms. The formation of conducting Cr-mediated pathways between the parallel SWNTs increases the transverse (intertube) conductance, while having negligible effect on the parallel (intratube) transport. In contrast, doping with Li has a predominant effect on the intratube electrical transport of aligned SWNT films. Large-scale first-principles calculations of electrical transport on aligned SWNTs show good agreement with the experimental electrical measurements and provide insight into the changes that different metal atoms exert on the density of states near the Fermi level of the SWNTs and the formation of transport channels. </p>

Facile and Efficient Synthesis of New Class of Imidazole Derivatives via One-Pot Multicomponent Reactions in Water

2013 ◽  
Vol 16 (10) ◽  
pp. 788-790
Author(s):  
Zinatossadat Hossaini ◽  
Samereh Seyfi ◽  
Faramarz Rostami-Charati ◽  
Mehdi Ghambarian
Keyword(s):  
Multicomponent Reactions ◽  
Efficient Synthesis ◽  
One Pot ◽  
Imidazole Derivatives ◽  
New Class
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