A5041801526- Asymmetric Hydrogenation and Catalysis
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Catalytic C–H Functionalization Methods
- Catalytic Cross-Coupling Reactions
- Berberine and alkaloids research
- Carbon dioxide utilization in catalysis
- Ionic liquids properties and applications
- Chemical Synthesis and Analysis
- Synthesis and Catalytic Reactions
- Traditional and Medicinal Uses of Annonaceae
- Crystallography and molecular interactions
- Asymmetric Synthesis and Catalysis
- Force Microscopy Techniques and Applications
- Extraction and Separation Processes
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Sulfur-Based Synthesis Techniques
- Alkaloids: synthesis and pharmacology
- Recycling and Waste Management Techniques
- Lubricants and Their Additives
- CO2 Reduction Techniques and Catalysts
- Innovative Microfluidic and Catalytic Techniques Innovation
- Cyclopropane Reaction Mechanisms
- Synthesis and bioactivity of alkaloids
- Synthetic Organic Chemistry Methods
Indian Institute of Technology Guwahati
2024
Homi Bhabha National Institute
2024
National Institute of Science Education and Research
2024
TU Wien
2018-2022
Université de Rennes
2015-2020
Institut des Sciences Chimiques de Rennes
2015-2020
Centre National de la Recherche Scientifique
2015-2020
Indian Institute of Chemical Technology
2019
Bipar
2016-2017
Générale-Beaulieu Clinic
2017
An efficient and green route to access diverse functionalized ketones via dehydrogenative-dehydrative cross-coupling of primary secondary alcohols is demonstrated. Selective tunable formation or catalyzed by a recently developed proton responsive ruthenium phosphine-pyridone complex. Light such as ethanol could be used alkylating agents in this methodology. Moreover, selective tandem double alkylation isopropanol achieved sequential addition different alcohols.
We present the use of silica-supported ionic liquids as catalysts for continuous production propylene carbonate from oxide using supercritical carbon dioxide solvent and reagent. Considerable differences in catalytic activity homogeneous catalysis batch mode continuous-flow supported species processes were found, suggesting that a synergistic effect between liquid silica support material takes place. While prepared via physisorption [C2mim]Br showed highest activity, studies on long-term...
We present a novel approach for the separation and recovery of Pt Pd leached from spent automotive catalyst relying on conventional polymerized supported ionic liquid phases (SILPs polySILPs, respectively). A variety parameters with possible effects behavior, namely, acidity concentration platinum group metal (PGM) containing solution, as well different SILP polySILP loadings, were evaluated PGMs in presence high concentrations Al, Fe, Zn, Ce. The material demonstrated ability to separate...
Selective formation of esters from primary alcohols or formic acid carbon dioxide was achieved in the presence phosphine-pyridone containing ruthenium catalysts.
β-C(sp3)-H functionalization on the 'privileged' piperazine nucleus has been disclosed using ruthenium catalysis. The catalyzed synthesis of a variety fused indoles from ortho-piperazinyl (hetero)aryl aldehydes is presented. This transformation takes place via dehydrogenation followed by an intramolecular nucleophilic addition transient enamine moiety onto carbonyl group and aromatization cascade.
Three new complexes bearing a chelating (κ<sup>2</sup>C,O) NHC-SO<sub>3</sub> ligand have been prepared.
The association of the new phosphinepyridonate ligands along with an iridium metallic precursor resulted in selective acetalization various primary alcohols <italic>via</italic> a formal dehydrogenative coupling reaction.
Abstract A single step synthetic strategy for (±)10‐ desbromoarborescidine is described. Starting from tryptamine and pentane‐1,5‐diol, this acceptorless dehydrogenative condensation process efficiently catalyzed by a ruthenium complex featuring proton‐responsive phosphine‐pyridone ligand.
Abstract Herein, we disclose a ruthenium‐catalyzed regioselective β‐C( sp 3 )−H bond functionalization on the piperazine core using aldehydes as alkylating agents. The present transformation appears to go through dehydrogenation of propagate enamine in situ , followed by nucleophilic addition aldehyde and hydrogenation result alkylation. A variety aromatic, heteroaromatic, aliphatic were employed for C‐3 alkylation N ‐alkyl‐ N′ ‐ p ‐nitrophenyl substituted piperazines. magnified image
A Ni-catalyzed C–N bond activation of 2-pyridylpyridone and 1-(9-alkyl 9H-purin-6-yl)pyridin-2(1H)-one coupling with arylboronic acid have been achieved. unique feature this reaction is the strategic bridging replacement pyridone unit aryl groups using nickel catalyzed Suzuki–Miyaura coupling. This provides an exciting new tool to build C–C bonds in place pyridones. wide variety substrates boronic acids are amenable transformation. More importantly, we successfully synthesized a...
An intrinsic directing group-assisted site-selective C(sp 3 )–H alkylation of 8-methylquinolines has been accomplished using readily available aziridines and Pd( ii ) catalysis.
Abstract Ionic liquids (ILs) have been used effectively in many applications for reducing problems related to friction and wear. In this work, the potential of ILs as an anti-wear extreme pressure lubricant additive high load-carrying gearbox such helicopter transmissions has studied. Two halide-free ILs: $${{\rm{P}}_{8881}}{\left({{\rm{BuO}}} \right)_2}{\rm{PO}}_2^ - $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>P</mml:mtext> <mml:mrow>...
A single step synthetic strategy for (±)10- Desbromoarborescidine is described. Starting from tryptamine and pentan-1,5-diol, this acceptorless dehydrogenative condensation process efficiently catalyzed by a ruthenium complex featuring proton-responsive phosphine pyridone ligand.Manuscript available supporting material includes experimental procedures, characterization of compounds, 1H, 13C NMR spectra chromatograms.
A single step synthetic strategy for (±)10- Desbromoarborescidine is described. Starting from tryptamine and pentan-1,5-diol, this acceptorless dehydrogenative condensation process efficiently catalyzed by a ruthenium complex featuring proton-responsive phosphine pyridone ligand.<div>Manuscript available supporting material includes experimental procedures, characterization of compounds, 1H, 13C NMR spectra chromatograms.</div>