A magnetic porous chitosan-based palladium catalyst: a green, highly efficient and reusable catalyst for Mizoroki–Heck reaction in aqueous media

2015 ◽  
Vol 39 (10) ◽  
pp. 7988-7997 ◽  
Author(s):  
Barahman Movassagh ◽  
Nasrin Rezaei
Keyword(s):  
Heterogeneous Catalyst ◽  
Palladium Catalyst ◽  
Heck Reaction ◽  
Aqueous Media ◽  
Reusable Catalyst ◽  
Highly Efficient ◽  
Highly Active ◽  
Porous Chitosan ◽  
High Yields ◽  
Recyclable Heterogeneous Catalyst

We have prepared a highly active and recyclable heterogeneous catalyst for the Heck reaction in aqueous media in high yields.

Biopolymer-metal complex wool–Pd as a highly active heterogeneous catalyst for Heck reaction in aqueous media

Tetrahedron ◽  
2011 ◽  
Vol 67 (1) ◽  
pp. 250-256 ◽  
Author(s):  
Shang Wu ◽  
Hengchang Ma ◽  
Xiaojie Jia ◽  
Yunmei Zhong ◽  
Ziqiang Lei
Keyword(s):  
Metal Complex ◽  
Heterogeneous Catalyst ◽  
Heck Reaction ◽  
Aqueous Media ◽  
Highly Active

Inorganic–organic hybrid silica based tin complex as a novel, highly efficient and recyclable heterogeneous catalyst for the one-pot preparation of spirooxindoles in water

2014 ◽  
Vol 43 (42) ◽  
pp. 15791-15797 ◽  
Author(s):  
Ramin Ghahremanzadeh ◽  
Zahra Rashid ◽  
Amir-Hassan Zarnani ◽  
Hossein Naeimi
Keyword(s):  
Heterogeneous Catalyst ◽  
Silica Gel ◽  
Reusable Catalyst ◽  
One Pot ◽  
Organic Hybrid ◽  
Highly Efficient ◽  
Hybrid Silica ◽  
The One ◽  
Recyclable Heterogeneous Catalyst

A tin complex immobilized on silica gel was prepared and applied as a green and heterogeneous reusable catalyst for one-pot three-component synthesis of spirooxindoles in water.

Cobalt Used as a Novel and Reusable Catalyst: A New and One-Pot Synthesis of Isatin-Derived N,S-Acetals Using Substituted Isatins and Thiols

Synthesis ◽  
2019 ◽  
Vol 51 (21) ◽  
pp. 4014-4022
Author(s):  
Caren D. G. da Silva ◽  
Ramesh Katla ◽  
Beatriz F. dos Santos ◽  
José M. C. Tavares Junior ◽  
Tábata B. Albuquerque ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Continuous Flow ◽  
High Conversion ◽  
Reusable Catalyst ◽  
One Pot ◽  
One Pot Synthesis ◽  
High Yields ◽  
Recyclable Heterogeneous Catalyst ◽  
First Time

The synthesis of isatin-derived N,S-acetals using cobalt as a recyclable heterogeneous catalyst in batch and continuous flow is reported for the first time. The present protocol produced high yields, which can be observed from the reaction between ketimines and thiols. Such reactions can also be applied to a gram-scale. In addition, the catalyst is recyclable, economically-viable, and nontoxic as well as easy to prepare. The remarkable features of this new methodology are high conversion and cleaner reaction profiles.

ChemInform Abstract: Biopolymer-Metal Complex Wool-Pd as a Highly Active Heterogeneous Catalyst for Heck Reaction in Aqueous Media.

ChemInform ◽  
2011 ◽  
Vol 42 (16) ◽  
pp. no-no
Author(s):  
Shang Wu ◽  
Hengchang Ma ◽  
Xiaojie Jia ◽  
Yunmei Zhong ◽  
Ziqiang Lei
Keyword(s):  
Metal Complex ◽  
Heterogeneous Catalyst ◽  
Heck Reaction ◽  
Aqueous Media ◽  
Highly Active

High yield and greener C–H difluoromethylation reactions using copper iodide nanoparticles/boron nitride nanosheets as a versatile and recyclable heterogeneous catalyst

2021 ◽  
Author(s):  
Udayakumar Veerabagu ◽  
Gowsika Jaikumar ◽  
Fushen Lu ◽  
Franck Quero
Keyword(s):  
Boron Nitride ◽  
Heterogeneous Catalyst ◽  
High Efficiency ◽  
High Yield ◽  
Copper Iodide ◽  
Boron Nitride Nanosheets ◽  
Greener Synthesis ◽  
High Yields ◽  
Recyclable Heterogeneous Catalyst

The 3 wt% CuI/BNNS catalyst exhibited high efficiency for C–H difluoromethylation reactions and enabled greener synthesis at high yields using cyrene as a solvent. Furthermore, the catalyst could be easily recovered and recycled for at least five cycles.

Efficient synthesis of pyrido[2,3-d]pyrimidine-7-carboxylic acids catalyzed by a TiO2/SiO2 nanocomposite in aqueous media at room temperature

2018 ◽  
Vol 73 (9) ◽  
pp. 641-645 ◽  
Author(s):  
Sepehr Sadegh-Samiei ◽  
Shahrzad Abdolmohammadi
Keyword(s):  
Heterogeneous Catalyst ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
Aqueous Media ◽  
Reaction Times ◽  
Molar Ratio ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
Moderate Reaction ◽  
Recyclable Heterogeneous Catalyst

AbstractA novel and efficient synthesis of eight 5-aryl-1,3-dimethyl-2,4-dioxo-1,2,3,4,5,8-hexahydropyrido[2,3-d]pyrimidine-7-carboxylic acids using a TiO2/SiO2 nanocomposite with a molar ratio of 1:1 as a recyclable heterogeneous catalyst is described. The desired products, five of which are new, are formed in short reaction times (2–3 h) with high to excellent yields (94%–98%) under very moderate reaction conditions (room temperature, aqueous media).

Graphene oxide–TiO2 composite: an efficient heterogeneous catalyst for the green synthesis of pyrazoles and pyridines

2016 ◽  
Vol 40 (6) ◽  
pp. 5053-5060 ◽  
Author(s):  
Shweta Kumari ◽  
Amiya Shekhar ◽  
Devendra D. Pathak
Keyword(s):  
Graphene Oxide ◽  
Green Synthesis ◽  
Aqueous Medium ◽  
Heterogeneous Catalyst ◽  
Room Temperature ◽  
Highly Efficient ◽  
Recyclable Heterogeneous Catalyst ◽  
Efficient Heterogeneous Catalyst

GO–TiO2 has been found to be a highly efficient and recyclable heterogeneous catalyst for the synthesis of pyrazoles and pyridines in aqueous medium at room temperature.

Solid supported palladium(0) nano/microparticle: a ligand-free efficient recyclable heterogeneous catalyst for mono- and β,β-double-Heck reaction

2012 ◽  
Vol 53 (52) ◽  
pp. 7044-7051 ◽  
Author(s):  
Dharminder Sharma ◽  
Sandeep Kumar ◽  
Arun K. Shil ◽  
Nitul Ranjan Guha ◽  
Bandna ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Heck Reaction ◽  
Ligand Free ◽  
Supported Palladium ◽  
Recyclable Heterogeneous Catalyst

SiO2·12WO3·24H2O: a Highly Efficient Catalyst for the Synthesis of 5-Arylidene Barbituric Acid in the Presence of Water

2009 ◽  
Vol 62 (4) ◽  
pp. 353 ◽  
Author(s):  
Ji-Tai Li ◽  
Ming-Xuan Sun
Keyword(s):  
Room Temperature ◽  
Barbituric Acid ◽  
Aqueous Media ◽  
Aromatic Aldehydes ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Efficient Route ◽  
Acid Catalyzed ◽  
High Yields

The condensation of aromatic aldehydes and barbituric acid catalyzed by SiO2·12WO3·24H2O in aqueous media at room temperature gave 5-arylidene barbituric acid in high yields with or without the use of ultrasound, providing a simple and efficient route to synthesis of these compounds.

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