Author
Pushpanathan N. Sathishkumar
Bio: Pushpanathan N. Sathishkumar is an academic researcher from National Institute of Technology, Tiruchirappalli. The author has contributed to research in topics: Catalysis & Chemistry. The author has an hindex of 3, co-authored 4 publications receiving 38 citations.
Papers
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TL;DR: In this paper, the NNN pincer ligands have been used as catalysts in Suzuki-Miyaura cross-coupling reaction and the effect of ancillary ligands (CH3CN and PPh3) in the complexes has been investigated towards coupling reaction.
19 citations
TL;DR: In this paper, a new series of Ru(II)(η6-p-cymene) complexes (1-5) was synthesized from pyridine based acylthiourea ligands (L1-L5) and [Ru(η 6-p-,cymenes)Cl2]2.
16 citations
TL;DR: Ru(II)-p-cymene complexes (1-3) containing picolyl based pseudo-acylthiourea ligands (L1-L3) were synthesized and characterized as discussed by the authors.
12 citations
TL;DR: In this paper, the dihedral angle between the thio-phene and pyridine rings is 77.79°(8)°, and inversion dimers linked by pairs of N-H⋯N hydrogen bonds generate R22(10) loops.
2 citations
TL;DR: An environmentally benign method for the Friedel-Crafts alkylation of indoles with nitroalkenes using ammonium niobium oxalate (ANO) as a recyclable catalyst was developed in this article .
Abstract: An environmentally benign method has been developed for the Friedel-Crafts alkylation of indoles with nitroalkenes using ammonium niobium oxalate (ANO) as a recyclable catalyst. The reactions were carried out under...
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TL;DR: This study shows that the designed Pct-Pd catalyst can be transferred from academic laboratory to industrial applications due to its excellent reusability and catalytic activity.
39 citations
TL;DR: The interest in acyl thioureas has continually been escalating owing to their extensive applications in diverse fields, such as synthetic precursors of new heterocycles, pharmacological and materials science, and technology as discussed by the authors .
Abstract: The interest in acyl thioureas has continually been escalating owing to their extensive applications in diverse fields, such as synthetic precursors of new heterocycles, pharmacological and materials science, and technology. These scaffolds exhibit a wide variety of biological activities such as antitumor, enzyme inhibitory, anti-bacterial, anti-fungal, and anti-malarial activities and find utilization as chemosensors, adhesives, flame retardants, thermal stabilizers, antioxidants, polymers and organocatalysts. In addition, the synthesis, and applications of coordination complexes of these ligands have also been overviewed. The current review is a continuation of our previous efforts in this area, focusing on the recent advancements during the period 2017 to present.
23 citations
TL;DR: In this paper, the synthesis and characterization of Schiff base ligands containing pyridine with [RuCl2(p-cymene)]2 was investigated and the results showed that Ru(II) complexes were utilized as catalysts for the transfer hydrogenation of a series of ketones in the i-propanol solution and in the presence of KOH.
22 citations
TL;DR: In this article, a class of metal-organic framework (MOF) that has been widely explored in catalysis was investigated as catalysts for transfer hydrogenation (TH) of carbonyl compounds (ketones and aldehydes) and biomass derivatives (levulinic acid and furfural) with 2-propanol as a hydrogen donor.
Abstract: MIL-88B is a class of metal–organic framework (MOF) that has been widely explored in catalysis. Iron- and chromium-based MIL-88B MOFs were prepared and characterized by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and N2 adsorption/desorption measurements. The MIL-88B MOFs were investigated as catalysts for transfer hydrogenation (TH) of carbonyl compounds (ketones and aldehydes) and biomass derivatives (levulinic acid and furfural) with 2-propanol as a hydrogen donor. Their conversion and selectivity were excellent. The recovered catalyst was reused ten times, with no significant loss in catalytic activity. The recovered catalyst after the tenth run retained its original crystallinity and morphology, which were confirmed by SEM and powder XRD studies. Catalyst reusability for levulinic acid (LA) conversion was also studied. The activation energy for the transformation of LA to γ-valerolactone (GVL) was 25.44 kJ mol−1. The catalytic performance of MIL-88B(Fe) was compared with that of MIL-53(Fe).
18 citations
TL;DR: In this paper, 14 RuII -arene (p-cymene/benzene) complexes (C1-C14) have been synthesized by varying the N-terminal substituent in the furoylthiourea ligand and satisfactorily characterized by using analytical and spectroscopic techniques.
Abstract: Fourteen new RuII -arene (p-cymene/benzene) complexes (C1-C14) have been synthesized by varying the N-terminal substituent in the furoylthiourea ligand and satisfactorily characterized by using analytical and spectroscopic techniques. Electrostatic potential maps predicted that the electronic effect of the substituents was mostly localized, with some influence seen on the labile chloride ligands. The structure-activity relationships of the Ru-p-cymene and Ru-benzene complexes showed opposite trends. All the complexes were found to be highly toxic towards IMR-32 cancer cells, with C5 (Ru-p-cymene complex containing C6 H2 (CH3 )3 as N-terminal substituent) and C13 (Ru-benzene complex containing C6 H4 (CF3 ) as N-terminal substituent) showing the highest activity among each set of complexes, and hence they were chosen for further study. These complexes showed different behavior in aqueous solutions, and were also found to catalytically oxidize glutathione. They also promoted cell death by apoptosis and cell cycle arrest. Furthermore, the complexes showed good binding ability with the receptors Pim-1 kinase and vascular endothelial growth factor receptor 2, commonly overexpressed in cancer cells.
17 citations