OOIR: Observatory of International Research

Papers

(The median citation count of Organic Preparations and Procedures International is 1. 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 2020-11-01 to 2024-11-01.)

Article	Citations
Ring Opening Reactions of Epoxides. A Review	28
Dendrimer-Functionalized Magnetic Graphene Oxide for Knoevenagel Condensation	20
Magnetic Fe₃O₄@SiO₂ Core–Shell Nanoparticles Functionalized with Sulfamic Acid Polyamidoamine (PAMAM) Dendrimer for the Multicomponent Synthesis of Polyhydroquinolines	20
Glycine as a Green Catalyst for the Preparation of Xanthenes	17
Facile Protocol for the Synthesis of 2-Amino-4H-Chromene Derivatives using Choline Chloride/Urea	17
A Concise and Efficient Synthesis of Novel Alkylated 2-(2-hydroxyphenyl)-4,5-diphenylimidazole-based Ionic Liquids Using the MAOS Technique	15
Green Approach for Metal-free One-pot Synthesis of Tetrahydrobenzo[b]pyrans with Sodium Alginate as a Reusable Bifunctional Biopolymeric Catalyst	12
Emerging Approaches for Synthesis of 1,2,3-Triazole Derivatives. A Review	11
Solvent-free Synthesis of Pyrano[2,3-d]pyrimidine Scaffolds Using per-6-NH₂-β-CD as a Reusable Supramolecular Host	10
Green Methods for the Synthesis of Pyrazoles: A Review	10
Three-Component Synthesis of 1,4-Disubstituted 1,2,3-Triazoles using a Novel and Efficient Nano Alumina Based Cu(II) Catalyst	10
Recent Trends in the Chemistry of [1,2,4]Triazole[1,5-a]pyrimidines	10
Expeditious and Highly Efficient One-Pot Synthesis of Functionalized Imidazoles Catalyzed by Sulfated Polyborate	10
A Brief Review on the Synthesis of Pyrrolo[2,3-c]coumarins, including Lamellarin and Ningalin Scaffolds	9
Synthesis and Antibacterial Activity of Novel 1,3-Oxazine Derivatives	9
Friedländer Synthesis of Novel Polycyclic Quinolines Using Solid SiO₂/H₂SO₄ Catalyst	9
Natural Deep Eutectic Solvent as a Green Catalyst for the One-pot Synthesis of Chromene and 4H-Pyran Derivatives	9
Current Advances in Transition Metal-Free Access to Indoles. A Review	9
Biowaste-Derived Heterogeneous Catalyst for the One-Pot Multicomponent Synthesis of Diverse and Densely Functionalized 2-Amino-4H-Chromenes	8
Preparation of Novel Chiral α-Diazocarbonyl Compounds Using Regitz’s Methodology	8
A New Multicomponent Reaction for the Synthesis of Amides	8
Soluble Glass, an Efficient Promoter for the Cascade Addition-Cyclization Reaction of 4-Hydroxycoumarins to Chalcone Derivatives	8
Synthesis of 3-Substituted Indoles Using Deep Eutectic Solvent and Ultrasound	8
Solvent- and Catalyst-Free Synthesis of 6H-Chromeno [4,3-b]quinolin-6-ones	7
Tetrabutylammonium Iodide/I₂ Mediated Convenient and Green Synthesis of Substituted Organic Isothiocyanates	7

Curcumin-Derived Heterocycles as Anticancer Agents. A Systematic Review.	6
Recent Synthetic Applications of Hypervalent Iodine Reagents. A Review in Three Installments: Installment I	6
An Efficient One-Pot Synthesis of 2-Aryl-4,5-diphenyl-1H-imidazoles with Amberlite IR-120(H) as a Reusable Heterogeneous Catalyst	6
Synthesis of Isoxazole-5(4 H )-ones Using Citrazinic Acid as an Organocatalyst in Aqueous Conditions	6
Solvent-free, Efficient Transamidation of Carboxamides with Amines Catalyzed by Recyclable Sulfated Polyborate Catalyst	6
One-Pot Expeditious Synthesis of 2-Amino-4,6-(disubstituted)nicotinonitriles Using Activated Fuller’s Earth as Catalyst	6
Chemoselective Benzylic Oxidation of Alkyl-Substituted Aromatics to Ketones with trans-3,5-Dihydroperoxy-3,5 Dimethyl-1,2-Dioxolane	5
Fe₃O₄@THAM-SO₃H as an Efficient Heterogeneous Magnetic Nanocatalyst to Access Functionalized Pyrrole and Polyhydroquinoline Derivatives	5
Synthetic Applications of a New Magnetic Mesoporous Nanocomposite Catalyst Fe₃O₄@MCM-41@NH-SO₃H	5
Preparation and Biological Activities of Novel Cuminaldehyde Derivatives	5
Supramolecular β-Cyclodextrin as a Reusable Catalyst for Xanthene Synthesis in Aqueous Medium	5
One-pot Synthesis of Benzimidazoles Using H₂SO₄@HTC as Catalyst	5
Synthesis of Dihydropyrano[2,3-c]pyrazoles Using Carboxymethyl Cellulose as a Recyclable Catalyst	5
An Improved Approach to the Synthesis of (±)-Noruleine	4
Aluminized Polyborate: A New and Eco-friendly Catalyst for One-pot Multicomponent Synthesis of 1,3-Diaryl-3-(arylamino)propan-1-ones via Mannich Reaction	4
Solar Energy Mediated Green Synthesis of Tetrahydrobenzo[b]pyrans Using L-Ascorbic Acid as an Organocatalyst in Aqueous Medium	4
Efficient TBAI-CS₂ Promoted Synthesis of Substituted Hydrazinecarbodithiolates	4
The Use of MnCoFe₂O₄@GT@Cu Magnetic Nanoparticles in the Synthesis of Benzopyrans	4
Synthesis of Tetrahydrobenzo[b]pyrans Promoted by Sodium Stearate as a Lewis Base-Surfactant Combined Catalyst in an Aqueous Micellar Medium	3
The Synthesis of gem-Bisamides Using a Carbocationic Catalytic System in Neutral Media	3
An Improved Synthesis of Polyfunctional Acyl Azides in PEG 400	3
Synthesis and in vitro Fungitoxic Evaluation of Syringaldehyde Schiff Bases and β-Lactams	3
One-pot Synthesis of Tetrahydrobenzo[4,5]imidazo[2, 1-b]quinazolin-1(2H)-ones Usingβ-Cyclodextrin-SO₃H as a Biocompatible and Recoverable Catalyst in Water	3
Synthesis of Lithocholic Acid from Plant-sourced Bisnoralcohol	3
1,2-Diaryl-4,5-diphenyl-1 H -imidazoles: Further Preparative Studies Using Amberlite IR120(H) as a Recyclable Heterogeneous Catalyst	3
Recent Synthetic Applications of Hypervalent Iodine Reagents. A Review in Three Installments: Installment III	3
Synthesis of Novel Quinolines with Antibacterial Activity	3
Synthesis of 2-Benzoylbenzofurans via Palladium(II)-catalyzed Cascade Reactions	3
Synthesis of Dihydropyrano[2,3-C]pyrazoles Using Mandelic Acid as an Efficient Catalyst	3
Eco-Friendly and Efficient Greener Process for the Synthesis of Chalcones and Pyrazolones Using the Supramolecular Catalyst β-Cyclodextrin	3
Nano-[Fe₃O₄@SiO₂-R-NHMe₂][H₂PO₄] as a Highly Effectual and Magnetically Recyclable Catalyst for the Preparation of bis(6-Amino-1,3-dim	3
Choline Chloride-based Eutectic Mixtures for Greener Synthesis of Quinoxaline-2,3-diol Derivatives and Terephthalaldehyde bis-(2-Aminophenylimine)	3
Preparation of Thiazolidin-4-ones Using NiFe₂O₄@SiO₂ Grafted Propylsulfonic Acid as an Efficient Catalyst	3
Functionalized Pyrimidines: Synthetic Approaches and Biological Activities. A Review	3
Development of 7-Aminopyrazolo[1,5-a]pyrimidines as Anti-Candida and Antibacterial Agents	3
Aluminized Polyborate: A New and Eco-friendly Catalyst for the Synthesis of SymmetricalN,N’-Di(aryl/alkyl)formamidines	3
L-Proline Catalyzed Synthesis of Heterocycles: A Review	3
Efficient Synthesis of Xanthenediones Using CuCeO₂ Nanoparticle Catalyst in Aqueous Medium	3
A Synthesis of Novel Selenophenes from Activated Acetylenes, Ethyl 2-Cyano-3-arylacrylate and Potassium Selenocyanate	3
An Efficient Regioselective Preparation of Fulvestrant	3
A New Julia-Kocienski Reagent for Convenient Access to the 2-Naphthylmethyl Vinyl Ethers	3
Cu(II)/Triazine-Based Dendrimer as an Efficacious Recoverable Nano-catalyst for the Preparation of 1-Substituted-1H-1,2,3,4-Tetrazoles under Solventless Conditions	3
Nano-Mn-[4-Benzyloxyphenyl-salicylaldimine-methylpyranopyrazole-carbonitrile]Cl₂as a New Schiff Base Complex and Catalyst for the Synthesis of Highly Substituted Tetrahydropyridines	2
Pyridinium Chlorochromate Supported on Montmorillonite–KSF as a Versatile Oxidant under Ball Milling Conditions	2
Development of an Efficient Alternative Synthesis of the Endothelin Receptor Antagonist Bosentan	2
CeO₂/CuO@GQDs@NH₂ Nanocomposite as a Reusable Catalyst for the Preparation of bis-Pyrazoles	2
Facile Method for the Synthesis of Cyanoacrylates by Knoevenagel Condensation	2
Efficient Synthesis of Xanthenes Using Silica-Supported Phosphotungstic Heteropoly Acid (PW/SiO2)	2
Microwave Assisted Synthesis of Thalidomide on Hectogram Scale	2
4-Fluoro-5-methylacridine: In Search of Long-Range “Lone-Pair Mediated” H-F and C-F Spin-Spin Coupling	2

Synthesis and Antiproliferative Evaluation of Novel 5-Aryl Substituted Oxazolo[4,5-b]pyridin-2-amine Derivatives	2
Synthesis and Antiproliferative Evaluation of Novel 5-Substituted Pyridazin-4-Amine Derivatives	2
Efficient and Practical Synthesis of Saflufenacil	2
A Convenient Preparation of Muconaldehyde Using a One-Pot Acid-to-Aldehyde Reduction Protocol	2
Regioselective, Efficient and Sustainable Bromination Process for the Synthesis of the Antimicrobial Agent Bromiphen Bromide	2
Sulfated Starch: A Highly Efficient Catalyst for Transamidation of Primary and Secondary Amines with Formamide and Acetamide	2
Keggin-Type Heteropoly-11-molybdo-1-vanadophosphoric Acid Supported on Montmorillonite K-10 Clay as a Catalyst for the Synthesis of Indeno[1,2-b]quinolinones: A Solvent-Free Approach	2
Recent Advances in 2-Aminobenzothiazole Chemistry: Catalysis in the Preparation of 1-(Benzothiazolylamino)methyl-2-naphthols. A Brief Review	1
Ru-based Cross Metathesis in the Synthesis of Glycosteroids	1
Novel Synthetic Access to 24a-Homochol-5-en-24a-oate Scaffold from Stigmasterol	1
Copper (II)-immobilized on Starch-coated Nanomagnetite as an Efficient and Magnetically Recoverable Catalyst for the Synthesis of Propargylamines through One-pot A³ Coupling Reaction	1
Synthesis of Thiazoles Catalyzed by Dichlorotriazine Attached to Graphene Oxide	1
ZnCl₂ Catalyzed Ring-Opening Reaction of Symmetrical Epoxides with Aromatic Amines for the Synthesis of 1,2-Amino Alcohols	1
A Simple and Convenient Two-step Synthesis of Idebenone	1
Catalyst-free Facile Synthesis of Novel Fused Spiro[benzo[4,5]thiazolo[3,2-a]pyrano[2,3-d]pyrimidine-4,3'-indoline]-3-carbonitrile Derivatives via One-pot Three-Component Reaction	1
A Mild Synthetic Method for Selective Conversion of Camphene to Isoborneol Derivatives	1
Facile Synthesis of Novel Cylopenta[ b ]indoles and Their Biological Assessments	1
Design, Synthesis, Anticancer Evaluation and Molecular Docking Studies of Amide Derivatives of Thienopyrimidine Isoxazoles	1
Preparation and Biological Activities of Novel Tetra-arylidene Barbituric Acids Containing Ether Spacers	1
A Novel Green Approach to the Synthesis of bis-4-Hydroxycoumarins	1
Application of a New Bifunctional Nanocatalyst Mn/SO ₃ H@zeolite-Y in Rapid Synthesis of 2-Aryl Mono- and bis -Perimidines	1
A Greener Synthesis of N-( p -Toluenesulfonyl)imidazole Using the Bio-Renewable Solvent 2-MeTHF, Companion DFT Studies	1
Nanocomposite Fe₃O₄@GO-NH as a Reusable Heterogeneous Catalyst for the Three-component Synthesis of 2-Amino-4H-chromenes	1
Synthesis of 3-Aryl-4-phenyl-1-selenoxo-1,4-dihydro-9-oxa-2,4-diaza-phenanthren-10-ones via a One-pot Reaction	1
[DMAPBr]⁺Br^-; A New Specific Electrophilic Bromine Transfer Reagent for Highly Ring Activated Aromatic Compounds in Water	1
One-Pot Three-Component Synthesis of Novel 1-((4-Aminosulfonylphenyl)methyl)-5-aryl-4-benzoyl-3-hydroxy-3-pyrrolin-2-ones in Aqueous Media and Investigation of Their Antimicrobial Activity	1
Synthesis of 8-Aryl(alkyl)-6-selenoxo-6H-1,9-dioxa-7-aza-cyclopenta[a]naphthalen-3-ones Under Solvent-free Conditions at Ambient Temperature	1
Preparation and Properties of Some New Pyrazole Derivatives	1
One-pot Three-component Synthesis of Novel 1,3,4-Thiadiazole-thiazolo[3,2-a]pyrimidine Derivatives Catalyzed by Molecular Iodine	1
Catalytic Switching in the Multi-component Synthesis of Novel Thioethers Based on 4-Hydroxy-2-pyridones	1
Tartaric Acid as an Expeditious and Green Catalyst for the Synthesis of 1,2,4-Triazolidine-3-thiones in an Aqueous Medium	1
Green Synthesis of Aryl Naphthoxazine-2-thiones Using NiFe₂O₄@SiO₂ⁿPr@GA Under Ultrasound Irradiation	1
Design, Synthesis, Anticancer Evaluation and Molecular Docking Studies of Amide Derivatives of 1,3,4-Thiadiazolyl Pyridinyl Isoxazoles	1
Microwave-Assisted Iodotrimethylsilane-Promoted Synthesis of Novel Pyrazolyl Chalcones	1
Preparation of 2,3-Diarylthiazolidin-4-one Derivatives Using Barium Sulfate Nano-Powders	1
Preparation and Biological Evaluation of Thymol Functionalized 2-Pyrazoline and Dihydropyrimidinone Hybrids	1
An Improved Synthesis of Sulfonyl Azides in Ionic Liquids	1
An Efficient Procedure for the Synthesis of 2-Arylsubstituted Benzimidazoles Catalyzed by Co (II) Immobilized on Fe₃O₄@SiO₂-NH₂/EP@SAA as a Recyclable Nanom	1
Siletanes: Synthesis, Structure, and Reagents in Organic Synthesis. A Review	1
Zn-Mediated Selective Reduction of Nitroarenes: A Sustainable Approach for Azoxybenzenes Synthesis	1
Oxidative Cleavage of C=N Bond of Ketoximes with Singlet Molecular Oxygen Generated from trans- 5-Hydroperoxy-3,5-dimethyl-1,2-dioxolane-3-yl Ethaneperoxoate	1
A Practical Alternate Synthesis of Tucatinib	1
A Novel Process for the Key Intermediate of Fluoroquinolones	1
Application of Fe₃O₄@SiO₂-Propyl@dapsone-copper Complex Nanoparticles as a Magnetically Recoverable Catalyst for the Synthesis of Azo-linked andbis-Benzo[d]imid	1
Synthesis of Novel 1,4-Disubstituted Piperazines and Evaluation of Their Antibacterial Activities	1
Facile, Expeditious and Cost-effective Preparation of N-Phthaloyl (S)-Amino Acids and Their in silico Activities against Staphylococcus Aureus	1
SbPh ₃ : An Efficient Catalyst for Dihydropyrimidinone and Dihydropyrimidin-5-carboxamide Synthesis Using the Biginelli Reaction	1
An Improved Synthesis of DOPO-POSS	1
Synthesis, Insecticidal Activity and DFT Study of 1,2,4-Triazolidinthione, 1,3,5-Oxadiazine and Thiourea Derivatives	1
Synthesis, Molecular Modeling, and Biological Evaluation of New N-(Benzo[d]thiazol-2-yl)-3-amino-but-2-enamide Derivatives as Cytotoxic Agents	1
Synthesis of Pyrano[2,3- d ]pyrimidines Using tris(Hydroxymethyl)aminomethane as a Biodegradable and Reusable Organobase Catalyst	1
Selective One-pot Synthesis of 2-Aryl-1-arylmethyl-1H-1,3-benzimidazoles in the Presence of Ammonium Persulfate and Their Antioxidant Activity	1
An Efficient Synthesis of Novel 1,3,5-Triazine-2-selenones from Acyl Isoselenocyanates and 2-Aminobenzimidazole	1
Synthesis of Thiazolidin-4-ones Using Novel Magnetic Nanoparticles Modified with S-Proline	1
Microwave-Assisted OPC-VH Mediated Synthesis of 2-Amino-1,3,4-thiadiazoles	1
Recent Synthetic Applications of Hypervalent Iodine Reagents. A Review in Three Installments: Installment II	1
An Improved and Efficient Approach for the Synthesis of Paliperidone	1
Synthesis of a Nitroxide Spin-labeled Varenicline (Chantix) Derivative	1
Alcoholysis of Primary Amides in the Presence of CF₃SO₃H	1
A Three-Component, One-Pot Synthesis of Novel Benzimidazo[2,1-b]Thiazoles from Thiobarbituric Acid under Thermal and Microwave-Assisted Conditions	1