Saeed Ahmad

ORCID: 0009-0005-8775-9486
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About
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Research Areas
  • Metal complexes synthesis and properties
  • Organometallic Compounds Synthesis and Characterization
  • Magnetism in coordination complexes
  • Crystal structures of chemical compounds
  • Organometallic Complex Synthesis and Catalysis
  • Ferrocene Chemistry and Applications
  • Synthesis and Characterization of Heterocyclic Compounds
  • Lanthanide and Transition Metal Complexes
  • Synthesis and biological activity
  • Metal-Organic Frameworks: Synthesis and Applications
  • COVID-19 and Mental Health
  • Long-Term Effects of COVID-19
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Phenothiazines and Benzothiazines Synthesis and Activities
  • Crystallography and molecular interactions
  • Inorganic and Organometallic Chemistry
  • Advanced NMR Techniques and Applications
  • Computational Drug Discovery Methods
  • Research in Cotton Cultivation
  • Quinazolinone synthesis and applications
  • N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
  • Medical and Biological Sciences
  • EFL/ESL Teaching and Learning
  • Analytical Chemistry and Chromatography
  • Metal-Catalyzed Oxygenation Mechanisms

Virginia Commonwealth University
2017-2024

Tampere University
2024

University of Engineering and Technology Lahore
2008-2024

Islamia University of Bahawalpur
2014-2024

Association for Language Learning
2024

University of Sargodha
2024

Central Cotton Research Institute
2022-2024

Prince Sattam Bin Abdulaziz University
2016-2023

Yarmouk University
2023

Capital University
2022-2023

A series of potential biologically active 2-(4-hydroxy-1,1-dioxido-2H-1,2-benzothiazin-3-yl)quinazolin-4(3H)-ones was synthesized in a straight forward manner by condensation respective 4-hydroxy-1,2-benzothiazine-1,1-dioxides with anthranilamide followed simple and high throughput cyclization N-[2-(aminocarbonyl)phenyl]-4-hydroxy-1,2-benzothiazine-3-carboxamide-1,1-dioxides. All the compounds were subjected to preliminary evaluation for their biological activity against Gram positive...

10.1248/cpb.54.1175 article EN Chemical and Pharmaceutical Bulletin 2006-01-01

Five novel Schiff bases have been prepared from o-formylphenoxyacetic acid and a series of aminothiazoles to form number potentially biologically active compounds. The structures these characterized using IR (1)H-and (13)C-NMR spectroscopy.

10.3390/11020206 article EN cc-by Molecules 2006-03-17

An efficient and environment friendly method has been described for the synthesis of various 2-alkyl-4-hydroxy-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxides starting from N-alkylation sodium obenzosulfimide in an ionic liquid first time. Ring cleavage ring closure resulting product were achieved a single step cost effective solvent (methanol) followed by alkyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate while boron triflouride was used as catalyst along with molecular sieves carboxamide...

10.5012/bkcs.2005.26.11.1771 article EN Bulletin of the Korean Chemical Society 2005-11-20

10.1016/j.poly.2017.09.016 article EN Polyhedron 2017-09-22

The China-Pakistan Economic Corridor (CPEC), a cornerstone of China’s Belt and Road Initiative (BRI), has significantly enhanced economic connectivity, infrastructure, mobility between China Pakistan, with investments exceeding $60 billion. However, this rapid transformation raises critical questions about the intersection climate, trade mobility, public health. Increased connectivity under CPEC may amplify risk Japanese Encephalitis (JE), zoonotic, mosquito-borne disease endemic...

10.5194/egusphere-egu25-529 preprint EN 2025-03-14

Ligand scrambling reactions in cyano(thione)gold(I) complexes ([>C=S-Au-CN]) to form [Au(>C=S) 2 ] + and [Au(CN) – species have been investigated for a series of thiones DMSO using 13 C 15 N NMR spectroscopy. Rapid approach equilibrium occurred resulted distinct signals the [>C=S-Au-CN] complexes, both NMR. Equilibrium constants (K eq ) were determined all by integrating CN resonances recorded at 298 K. The influence various factors (initial concentration, ionic strength,...

10.1139/v02-165 article EN Canadian Journal of Chemistry 2002-10-01

Herein, we describe a new five-step approach to prepare 1-(3,6-dibromopyridin-2-yl)-2-(3,5-difluorophenyl)ethan-1-amine, an important intermediate in the synthesis of lenacapavir. The key step sequence is Weinreb amide-based ketone synthesis, which provides alternative entry point core structural component. Starting from inexpensive 2-(3,5-difluorophenyl)acetic acid, amide and followed nucleophilic substitution afford 47% yield. subsequent functional group manipulation delivers racemic amine...

10.26434/chemrxiv-2024-79678 preprint EN cc-by-nc 2024-05-08

7-Bromo-4-chloro-1H-indazol-3-amine is a heterocyclic fragment used in the synthesis of Lenacapavir, potent capsid inhibitor for treatment HIV-1 infections. In this manuscript, we describe new approach to synthesizing 7-bromo-4-chloro-1H-indazol-3-amine from inexpensive 2,6-dichlorobenzonitrile. This synthetic method utilizes two-step sequence including regioselective bromination and heterocycle formation with hydrazine give desired product an overall isolated yield 38–45%. The protocol has...

10.3390/molecules29122705 article EN cc-by Molecules 2024-06-07
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