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5 results on '"Dildar Hossain"'

1. ChemInform Abstract: Polystyrene-Anchored Palladium(II) Schiff Base Complex: A Reusable Catalyst for Phosphine-Free and Copper-Free Sonogashira Cross-Coupling Reaction in Aqueous Medium

Author

P. Mondal, A. Singha Roy, Kazi Tuhina, Manirul Islam, Sanchita Mondal, and Dildar Hossain

Subjects
chemistry.chemical_compound, Schiff base, chemistry, Polymer chemistry, Sonogashira coupling, chemistry.chemical_element, General Medicine, Heterogeneous catalysis, Copper, Coupling reaction, Phosphine, Catalysis, Palladium
Abstract

A novel polystyrene-supported Pd(II) complex is synthesized and applied as heterogenous catalyst for Sonogashira cross-coupling reactions under copper- and phosphine-free conditions.

Published
2012
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2. ChemInform Abstract: Selective Oxidation of Olefins Catalyzed by Polymer-Anchored Nickel(II) Complex in Water Medium

Author

Manir Mobarak, Sanchita Mondal, Dildar Hossain, Paramita Mondal, Manirul Islam, and Anupam Singha Roy

Subjects
Reaction conditions, chemistry.chemical_classification, Allylic rearrangement, Nickel, Aqueous solution, Chemistry, Polymer chemistry, chemistry.chemical_element, Dehydrogenation, General Medicine, Polymer, Catalysis
Abstract

Selective oxidation of olefins has been carried out in water medium with tert-butylhydroperoxide (TBHP, 70% aqueous) as an oxidant using polymer-anchored Ni(II) complex as a catalyst. Several parameters were varied to optimize the reac-tion conditions. Under the optimized reaction conditions olefins gave selectively allylic oxidation products. The present polymer anchored Ni(II) complex can be recycled five times without any appreciable loss in catalytic activity.

Published
2011
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3. ChemInform Abstract: Polystyrene-Anchored Palladium(II) Complex as an Efficient and Reusable Catalyst for Suzuki Cross-Coupling Reaction in Water Medium

Author

Dildar Hossain, Anupam Singha Roy, Kazi Tuhina, Paramita Mondal, and Manirul Islam

Subjects
chemistry.chemical_compound, Chemical engineering, Chemistry, chemistry.chemical_element, General Medicine, Polystyrene, Coupling reaction, Catalysis, Palladium
Abstract

The new heterogeneous palladium(II) catalyst can be prepared readily from inexpensive and commercially available starting materials.

Published
2011
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4. ChemInform Abstract: Synthesis and Characterization of Polymer Anchored Cu(II) Complexes: Heterogeneous Catalysts for Preparation of Diaryl Ethers

Author

Manir Mobarak, Manirul Islam, Sanchita Mondal, Anupam Singha Roy, Dildar Hossain, and P. Mondal

Subjects
chemistry.chemical_classification, Coupling (electronics), Diaryl ether, chemistry, Polymer chemistry, Organic chemistry, General Medicine, Polymer, Catalysis, Characterization (materials science)
Abstract

Synthesis, characterization, and application of novel reusable catalysts (I) in Ullmann diaryl ether coupling is described.

Published
2011
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5. ChemInform Abstract: A Recyclable Heterogeneous Copper(II) Schiff Base Catalyst for the O-Arylation Reaction of Phenols with Aryl Halides

Author

Sanchita Mondal, Anupam Singha Roy, Manir Mobarak, Dildar Hossain, Paramita Mondal, and Manirul Islam

Subjects
chemistry.chemical_compound, Schiff base, Chemistry, Aryl, Halide, chemistry.chemical_element, Organic chemistry, General Medicine, Phenols, Copper, Catalysis
Abstract

The copper(II) Schiff base catalyst is air-stable and can be reused for five times with only minimal loss of activity.

Published
2010
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