Catalytic performance study of nano-cobalt: a catalyst for complement to the Heck coupling reaction

Kumara, Karthik; Krishnamurthy, G.; Swamy, B.E. Kumara; Kumar, Neeraj; Kumar, Mohan

doi:10.1007/s10934-016-0350-5

Cited by 15 publications

(2 citation statements)

References 51 publications

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“…In recent years, the chemistry of Schiff bases contains N-donor atom which has been extensively studied and has acquired a great interest because of the azomethine C=N linkage essential for biological activity [15]. 1,2,4-triazoles constitute broad realization due to their useful application in different areas of biological activity, and as industrial intermediates, it is effectively used in polymers, dyestuff, photographic chemicals, and agricultural chemicals [16]. There is some biological activity of 1,2,4-triazole such as antimicrobial [17], antiinflammatory [18], and antioxidant [19].…”

Section: Introductionmentioning

confidence: 99%

Biological activity of 4-ethynyl-, 4-oxy-, 4-butoxypropylpyperidine and azaheterocyclic compounds

Daulet

Baktybayeva

Sokolenko

et al. 2021

IJBCh

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The immune system of humans and higher animals performs an important function of maintaining the constancy of the internal environment of the body by detecting and eliminating foreign substances of an antigenic nature, both endogenously created and exogenously penetrating. This function of the immune system is performed by factors of innate and acquired immunity. As the name suggests, immunostimulants are the agents boosting the immune response. The new chemical series of compounds is promising for the search new effective immunostimulating drugs. Acute toxicity and the effect on peripheral blood hemogram parameters and on the subpopulation composition of lymphocytes were determined in the compounds (piperidine-containing derivatives):ethoxyethyl)-4-ethynyl-4hydroxypiperidine) dihydrochloride and, 1:1 complexes of β-cyclodextrin with 1-(2-ethoxyethyl)-4-(2-ethoxyethoxyl)-4-ethynylpiperidine, 1-(2-ethoxyethyl)-4-(2-methoxyethoxyl)-4-ethynylpiperidine, 7-(2-methoxyethyl)-2,2-dimethyl-3-thia-7-azabicyclo[3.3.1]nonane or 3-(2-morpholinoethyl)-7-(3isopropoxypropyl) diazabicyclo[3.3.1] nonane with β-cyclodextrin. Compound ˗ 1-(3-n-butoxypropyl) piperidine-3-methyl-4-spiro-5'-imidazolidine-2',4'-dione, exceeds the immunostimulating activity of the comparison drug of levamizole by 3.1 times and shows low toxicity.

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Section: Introductionmentioning

confidence: 99%

Biological activity of 4-ethynyl-, 4-oxy-, 4-butoxypropylpyperidine and azaheterocyclic compounds

Daulet

Baktybayeva

Sokolenko

et al. 2021

IJBCh

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“…On the other hand, the synthetic aspect of quinazolinone and its derivatives carried out by condensation reaction of isatoic anhydride, primary amine, or ammonium salts with aldehydes was widely employed. It was catalyzed by β‐cyclodextrin‐SO 3 H , nanoparticles , Saccharomyces cerevisiae (baker's yeast) , Montmorillonite K10 , cation‐exchange resin , palladium , ionic liquid–water , and so on. A vast number of quinazolinone derivatives have been designed to provide effective drugs, especially some antifungal agents such as tryptanthrin and 2‐acetylquinazolin‐4(3 H )‐one .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Antimicrobial Studies of New Spiropyran Quinazolinone Derivatives with Amide, Urea, and Sulfonamide Moieties

Poojari

Krishnamurthy

et al. 2017

Journal of Heterocyclic Chem

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Three new series of quinazolinone derivatives containing amide, urea, and sulfonamide were synthesized through multistep synthesis. The required intermediates 4‐[(4′‐oxo‐2,3,3′,4′,5,6‐hexahydro‐1′H‐spiro[pyran‐4,2′‐quinazolin]‐1′‐yl)methyl]benzoic acid 4 and 1′‐(3‐aminobenzyl)‐2,3,5,6‐tetrahydro‐1′H‐spiro[pyran‐4,2′‐quinazolin]‐4′(3′H)‐one 8 were prepared by hydrolysis of ester and reduction of nitro intermediates. Three different series of compounds were synthesized from these two scaffolds. The key scaffolds 4 and 8 were successfully converted to target molecules via amides 5a–k, urea 9a–f, and substituted sulfonamides 10a–e. The chemical structures of newly synthesized compounds were characterized by spectral analysis. The structure of 5d was confirmed by X‐ray crystallography study. These newly synthesized compounds were screened for antibacterial studies against Staphylococcus epidermidis, Salmonella typhi, Proteus mirabilis, and Shigella sonnei and for the antifungal activity against Aspergillus niger and Candida albicans. Among all the compounds, 9b–d showed excellent activities against S. typhi. Compound 9a showed moderate activity against all fungi stains, and 5I showed moderate activity against P. mirabilis, while the other derivatives showed fairly good activities.

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Cobalt supported on dendronized magnetic nanoparticles: A new highly efficient and recyclable catalyst for the Mizoroki–Heck cross‐coupling reaction

Arghan

Koukabi

Kolvari

2019

Applied Organom Chemis

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Funding information Semnan UniversityPolyamidoamine (PAMAM) is one of the most interesting types of hyperbranched polymers that carry a large number of amino groups on its surface. PAMAM has gained significant attention from synthetic organic chemists due to its structural characteristics, controllable structure, inner porosity, and ability to trap a wide range of ions and molecules. So, in this work, the PAMAM dendrimer was synthesized, grafted onto the surface of magnetite nanoparticles, and the resulting hybrid nanoparticles were then employed as suitable host for immobilizing cobalt nanoparticles. The newly developed catalyst was well characterized by Fourier transform-infrared, X-ray diffraction, thermogravimetric analysis, field emission-scanning electron microscopy, transmission electron microscopy, atomic absorption spectroscopy, element mapping and energy-dispersive X-ray analysis. The efficiency of the as-prepared nanocatalyst was evaluated for the Mizoroki-Heck crosscoupling reactions. The MNP@PAMAM-Co represented perfect catalytic efficiency and high selectivity for the Mizoroki-Heck cross-coupling reaction compared with previously reported catalysts. The catalyst separation from the reaction mixture was easily achieved with the assistance of an external magnetic field, and its recycling was also investigated for five consecutive runs. Hot filtration confirmed no leaching of the active metal during the Heck coupling.

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Catalytic performance study of nano-cobalt: a catalyst for complement to the Heck coupling reaction

Cited by 15 publications

References 51 publications

Biological activity of 4-ethynyl-, 4-oxy-, 4-butoxypropylpyperidine and azaheterocyclic compounds

Biological activity of 4-ethynyl-, 4-oxy-, 4-butoxypropylpyperidine and azaheterocyclic compounds

Synthesis and Antimicrobial Studies of New Spiropyran Quinazolinone Derivatives with Amide, Urea, and Sulfonamide Moieties

Cobalt supported on dendronized magnetic nanoparticles: A new highly efficient and recyclable catalyst for the Mizoroki–Heck cross‐coupling reaction

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