OOIR: Observatory of International Research

Papers

(The TQCC of Organic Preparations and Procedures International is 3. 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
Magnetic Fe₃O₄@SiO₂ Core–Shell Nanoparticles Functionalized with Sulfamic Acid Polyamidoamine (PAMAM) Dendrimer for the Multicomponent Synthesis of Polyhydroquinolines	20
Dendrimer-Functionalized Magnetic Graphene Oxide for Knoevenagel Condensation	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
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
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
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
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
Synthesis of 3-Substituted Indoles Using Deep Eutectic Solvent and Ultrasound	8
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
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
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
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
The Use of MnCoFe₂O₄@GT@Cu Magnetic Nanoparticles in the Synthesis of Benzopyrans	4
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
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
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