OOIR: Observatory of International Research

Papers

(The H4-Index of Topics in Current Chemistry is 27. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-09-01 to 2025-09-01.)

Article	Citations
Enantioselective Allylic C–H Bond Oxidation of Olefins Using Copper Complexes of Chiral Oxazoline Based Ligands	191
Solar-Driven Photocatalytic Films: Synthesis Approaches, Factors Affecting Environmental Activity, and Characterization Features	75
Covalent and Non-covalent Functionalized Nanomaterials for Environmental Restoration	74
Sonochemical Protocols for Heterocyclic Synthesis: A Representative Review	68
Plasmonic Hybrid Nanostructures in Photocatalysis: Structures, Mechanisms, and Applications	59
Multicomponent Reactions Using C,N-Binucleophilic Nature of Aminopyrazoles: Construction of Pyrazole-Fused Heterocycles	59
Palladium N-Heterocyclic Carbene-Catalyzed Aminations: An Outline	57
Construction of 1,4-Dihydropyridines: The Evolution of C4 Source	46
Photo-activatable Reagents for Bioorthogonal Ligation Reactions	46
Bioorthogonal Chemistry in Cellular Organelles	44
Correction to: Covalent and Non-covalent Functionalized Nanomaterials for Environmental Restoration	41
Recent Advances in Bioorthogonal Ligation and Bioconjugation	40
Recent Progress in Fragmentation of Katritzky Salts Enabling Formation of C–C, C–B, and C–S Bonds	39
Recent Advances in Semiconductor Heterojunctions and Z-Schemes for Photocatalytic Hydrogen Generation	39
Strategies Toward the Catalyst-Free α-C–H Functionalizations of Tertiary Amines	38
Total RNA Synthesis and its Covalent Labeling Innovation	36
Review on Amphiphilic Ionic Liquids as New Surfactants: From Fundamentals to Applications	35
Vision on Synthetic and Medicinal Facets of 1,2,4-Triazolo[3,4-b][1,3,4]thiadiazine Scaffold	35
Bioorthogonal Reactions in Bioimaging	33
Ensemble Density Functional Theory of Neutral and Charged Excitations	33
Promising Nitrogen-Doped Graphene Derivatives; A Case Study for Preparations, Fabrication Mechanisms, and Applications in Perovskite Solar Cells	31
Methods for Direct Reductive N-Methylation of Nitro Compounds	31
Photocatalytic Reforming of Biomass: What Role Will the Technology Play in Future Energy Systems	29
Research Progress and Application of Bioorthogonal Reactions in Biomolecular Analysis and Disease Diagnosis	28
The Repurposed ACE2 Inhibitors: SARS-CoV-2 Entry Blockers of Covid-19	28

Synthetic Approaches, Biological Activities, and Structure–Activity Relationship of Pyrazolines and Related Derivatives	28
Proton Conductive Lanthanide-Based Metal–Organic Frameworks: Synthesis Strategies, Structural Features, and Recent Progress	27
Progress of Metal Nanomaterial Controllable Preparation by Photoreduction	27