A5088417031- Catalytic Alkyne Reactions
- Cyclopropane Reaction Mechanisms
- Catalytic C–H Functionalization Methods
- Synthesis and Catalytic Reactions
- Asymmetric Hydrogenation and Catalysis
- Oxidative Organic Chemistry Reactions
- Organic and Molecular Conductors Research
- Synthesis and Properties of Aromatic Compounds
- Heavy metals in environment
- Fullerene Chemistry and Applications
- Organic Chemistry Cycloaddition Reactions
- Radioactivity and Radon Measurements
- Molecular Junctions and Nanostructures
- Cyclization and Aryne Chemistry
- Geochemistry and Geologic Mapping
Soochow University
2016-2019
Suzhou Research Institute
2018-2019
Tai Solarin University of Education
2016
Environmental and health risk posed by heavy metals from municipal landfill cannot be over emphasized. However, the toxicity fate of metal in soil is dependent on its chemical form therefore quantification different forms more meaningful than estimation total concentration. This study investigated potential hazards pollution at two landfills Sagamu, Ogun state, Nigeria. Soil samples were collected around Cu, Zn, Cd, Pb, Fe studied, using Tessier Five-step sequential extraction procedure. The...
Herein, we present a novel [3 + 2] cycloaddition reaction of β-keto esters with nitrile oxides, which were generated in situ from copper carbene and tert-butyl nitrite. This three-component provides new methodology for the direct synthesis fully substituted isoxazole derivatives, featuring mild conditions, readily accessible starting materials simple operation. The experimental studies DFT calculations suggest that starts generation key intermediate followed by to give final products.
Computational studies were carried out to provide mechanistic insights into the Rh(I)-catalyzed activation of cyclopropenes and detailed pathways [3+2+1] carbonylative carbocyclization tethered ene- yne-cyclopropenes. results suggest that it is more favorable for cyclopropene moiety ene-cyclopropenes initially undergo heterolytic cleavage a C-C σ-bond form vinyl Rh(I) carbenoid intermediate than proceed through homolytic generate rhodacyclobutene intermediate. The yielded could cyclization...
Computational studies were carried out to understand the reaction mechanisms and origin of substrate-dependent chemo- regio-selectivities Au(<sc>i</sc>)-catalysed intramolecular addition hydroxylamine group onto alkynes.
Computational studies were carried out to understand the chemoselectivities between carbonyl and hydroxyl groups in Rh(<sc>ii</sc>)–AVC involved reactions.
The detailed mechanisms of gold(i)-catalyzed annulations propiolates with substituted and unsubstituted isoxazoles were investigated by DFT calculations. A unified rationale for the formation key seven-membered heterocyclic intermediate was proposed through initial chemoselective N-attack isoxazole followed sequential generation an unprecedented 2H-azirine-containing intermediate, 6π electrocyclization ring expansion. Subsequent substrate-dependent transformations rationalized to generate...
Computational studies were carried out to investigate the detailed mechanisms of Pd(0)-catalyzed intermolecular and intramolecular hydroamination methylenecyclopropanes.
Reactions involving Rh(II)-azavinylcarbenes (Rh(II)-AVCs) to synthesize nitrogen-containing compounds have attracted significant research interest. Despite the importance of these reactions, controlling chemoselectivities in reactions Rh(II)-AVC remains a challenge. To understand mechanisms and factors between N-H C═O groups carbamates amides Rh(II)-AVC, computational studies were employed. The results reveal that not only greater nucleophilicity group than carbonyl group, but also presence...
Computational analyses of the tris(3,4-dimethylenecyclobuteno)benzene molecule indicate that absence equivalent a HOMO an etheno group between internal carbon atoms annelating butadieno groups is mainly responsible for relatively weak cyclohexatriene-like fixation in central benzene ring. To increase extent C–C bond-length alternation moiety, two strategies modification are proposed to make presence groups. The first introduce π-electron-donating heteroatom/group form five-membered ring with...
Economic crises have led to an increase in entrepreneurial activities like street food vending. However, roasting on the streets can contamination. This study compares concentrations of heavy metals such as Cd, Cr, Cu, Fe, Mn, Pb, and Zn home-roasted street-roasted chicken, maize, meat, fish, plantain Nigeria. The samples were digested with acid, these elements digests determined using Atomic Absorption Spectrometer. results showed that higher than food. mean concentration decreased...