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 2021-11-01 to 2025-11-01.)

Article	Citations
Enantioselective Allylic C–H Bond Oxidation of Olefins Using Copper Complexes of Chiral Oxazoline Based Ligands	222
Solar-Driven Photocatalytic Films: Synthesis Approaches, Factors Affecting Environmental Activity, and Characterization Features	85
Covalent and Non-covalent Functionalized Nanomaterials for Environmental Restoration	82
Sonochemical Protocols for Heterocyclic Synthesis: A Representative Review	74
Plasmonic Hybrid Nanostructures in Photocatalysis: Structures, Mechanisms, and Applications	63
Multicomponent Reactions Using C,N-Binucleophilic Nature of Aminopyrazoles: Construction of Pyrazole-Fused Heterocycles	60
Bioorthogonal Chemistry in Cellular Organelles	59
Construction of 1,4-Dihydropyridines: The Evolution of C4 Source	49
Palladium N-Heterocyclic Carbene-Catalyzed Aminations: An Outline	47
Photo-activatable Reagents for Bioorthogonal Ligation Reactions	46
Correction to: Covalent and Non-covalent Functionalized Nanomaterials for Environmental Restoration	45
Recent Advances in Bioorthogonal Ligation and Bioconjugation	43
Recent Advances in Semiconductor Heterojunctions and Z-Schemes for Photocatalytic Hydrogen Generation	43
Review on Amphiphilic Ionic Liquids as New Surfactants: From Fundamentals to Applications	41
Recent Progress in Fragmentation of Katritzky Salts Enabling Formation of C–C, C–B, and C–S Bonds	41
Strategies Toward the Catalyst-Free α-C–H Functionalizations of Tertiary Amines	40
Vision on Synthetic and Medicinal Facets of 1,2,4-Triazolo[3,4-b][1,3,4]thiadiazine Scaffold	38
Methods for Direct Reductive N-Methylation of Nitro Compounds	35
Total RNA Synthesis and its Covalent Labeling Innovation	35
Photocatalytic Reforming of Biomass: What Role Will the Technology Play in Future Energy Systems	33
Promising Nitrogen-Doped Graphene Derivatives; A Case Study for Preparations, Fabrication Mechanisms, and Applications in Perovskite Solar Cells	31
Bioorthogonal Reactions in Bioimaging	31
Ensemble Density Functional Theory of Neutral and Charged Excitations	30
Synthetic Approaches, Biological Activities, and Structure–Activity Relationship of Pyrazolines and Related Derivatives	30
Proton Conductive Lanthanide-Based Metal–Organic Frameworks: Synthesis Strategies, Structural Features, and Recent Progress	30

Electron and Energy Transfer Mechanisms: The Double Nature of TiO2 Heterogeneous Photocatalysis	29
Metal-Free Catalysis in C–C Single-Bond Cleavage: Achievements and Prospects	29