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Optimized Synthesis of Dinitrochalcones via Ultrasonic Bath in a Cyclohexane–Methanol Solvent System

Alam Yair Hidalgo, Quirino Torres-Sauret, Carlos Ernesto Lobato-García, Erika Madeleyne Ramos-Rivera, Luis Fernando Roa de la Fuente, Abraham Gómez-Rivera, Miguel Ángel Vilchis-Reyes, Erika Alarcón-Matus, Oswaldo Hernández-Abreu & Nancy Romero-Ceronio · Organics · 2025

This study describes the efficient synthesis of five dinitrochalcones (DNCHs) using an ultrasonic bath as an unconventional method to improve reaction yields and reduce reaction times. The Claisen–Schmidt condensation of nitroacetophenones and nitrobenzaldehydes was carried out i...

Open access Research Article 10.3390/org6020014

Luminescence of the Conjugate Bases of [2-(2-Hydroxyphenyl)phenyl]phosphinic Acid and Single-Crystal X-Ray Structure Determination of Sodium [2-(2-Hydroxyphenyl)phenyl]phosphinate

Valeria Gagliardi, Jesús Castro, Valentina Beghetto, María Expósito & Marco Bortoluzzi · Organics · 2025

The commercial flame-retardant 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) was almost quantitatively converted in sodium [2-(2-hydroxyphenyl)phenyl]phosphinate Na[OH-Ph-Ph-PHO2] and disodium 2-(2-phosphinatophenyl)benzen-1-olate Na2[O-Ph-Ph-PHO2] under mild reaction...

Open access Research Article 10.3390/org6010010

Synthesis and Biological Evaluation of Salicylaldehyde-Derived Secondary Amines: Antioxidant, Anti-Inflammatory, and Insecticidal Activities with DFT Insights

Chamseddine Derabli, Noureddine Rahim, Roumaissa Djaba, Sarra Aouidi, Chawki Bensouici, Stephanie Hesse & Houssem Boulebd · Organics · 2025

Six secondary amine derivatives derived from salicylaldehyde (SA) were successfully synthesized in good to excellent yields and evaluated for their biological activities. The synthesized compounds exhibited remarkable antioxidant properties, as determined by ABTS and phenanthroli...

Open access Research Article 10.3390/org6010011

Synthesis and Characterization of the Conjugated Peptide Lunatin-Folate

Amanda Neves de Souza, Adriano Monteiro de Castro Pimenta & Rodrigo Moreira Verly · Organics · 2025

Bioactive peptides are promising therapeutic agents due to their antimicrobial and anticancer activities, although their lack of selectivity often limits clinical applications. This study demonstrates the optimal synthetic route for conjugating folic acid (FA) with the bioactive...

Open access Research Article 10.3390/org6010008

Synthesis of Bispidine-Based Prostate-Specific Membrane Antigen-Targeted Conjugate and Initial Investigations

Aleksei E. Machulkin, Stanislav A. Petrov, Maria D. Kraynova, Anastasiia S. Garanina, Bayirta V. Egorova, Roman V. Timoshenko, Alexander N. Vaneev, Alexander S. Erofeev, Anna B. Priselkova, Mikhail A. Kalinin, Aleksei V. Medved’ko, Stepan N. Kalmykov, Elena K. Beloglazkina & Sergey Z. Vatsadze · Organics · 2025

Nowadays, PSMA ligands are widely used for radiotheragnostic purposes in prostate cancer. The synthesis of a PSMA-Bisp conjugate was developed and realized with good yield (overall yield ~58% for the last two steps). All newly synthesized compounds were characterized by physicoch...

Open access Research Article 10.3390/org6010007

Facile Synthesis of a Cholesterol–Doxorubicin Conjugate Using Cholesteryl-4-nitrophenolate as an Activated Ester and Biological Property Analysis

Pedro Freitas, Dina Maciel, Jolanta Jaśkowska, Kamila Zeńczak-Tomera, Yanbiao Zhou, Guoyin Yin & Ruilong Sheng · Organics · 2025

Developing new biomolecule–drug conjugates as prodrugs is a promising area for natural products and pharmaceutical chemistry. Herein, a cholesterol–doxorubicin (Chol-DOX) conjugate was synthesized using cholesteryl-4-nitrophenolate as a facile, stable, and controllable activated...

Open access Research Article 10.3390/org6010006

Vinylation of Alcohols, Thiols, and Nitrogen Compounds Using a Stoichiometric Amount of In Situ Generated Acetylene

Maria S. Ledovskaya, Vladimir V. Voronin, Anna A. Reznichenko & Ekaterina A. Reznichenko · Organics · 2025

In this work, we developed a highly efficient and versatile environmentally benign methodology for the vinylation of a broad scope of substances, including alcohols, thiols, and nitrogen compounds. The key advantage of the proposed method is the use of calcium carbide as a robust...

Open access Research Article 10.3390/org6010005

Synthesis and Pharmacology of Clinical Drugs Containing Isoindoline Heterocycle Core

Mukund Jha, Dani Youssef, Haley Sheehy & Amitabh Jha · Organics · 2025

Heterocyclic compounds are the cornerstone for active pharmaceutical ingredients. Among heterocycles, isoindoline core occupies a special place, as ten commercial bioactive compounds/drugs contain this skeleton decorated with several functional groups required for optimal recepto...

Open access Research Article 10.3390/org6010003

Environmental Fate, Ecotoxicity, and Remediation of Heterocyclic Pharmaceuticals as Emerging Contaminants: A Review of Long-Term Risks and Impacts

Oussama Baaloudj, Laura Scrano, Sabino Aurelio Bufo, Lee-Ann Sade Modley, Filomena Lelario, Angelica Rebecca Zizzamia, Lucia Emanuele & Monica Brienza · Organics · 2025

Heterocyclic pharmaceuticals are emerging contaminants due to their toxic, carcinogenic nature and detrimental impact on the natural ecosystem. These compounds pose a significant environmental concern given their widespread use in medical therapy, constituting over 90% of new med...

Open access Research Article 10.3390/org6010001

Protolytic Equilibria of Cetirizine in the Presence of Micelle-Forming Surfactants

Marija Popović-Nikolić, Gordana Popović, Slavica Oljačić & Katarina Nikolić · Organics · 2025

The acid–base equilibria of cetirizine were investigated with and without the presence of differently charged micelle-forming surfactants (anionic, cationic, nonionic). The pKa values were potentiometrically determined at 25 °C and at a constant ionic strength (0.1 M NaCl). Exper...

Open access Research Article 10.3390/org6010002

Acetic Acid and Ethyl Acetate as Solvents for Electropolymerization Reactions, Considering 4-Methoxyphenol and Composition of Solvent Mixtures

László Kiss & Péter Szabó · Organics · 2024

Various organic compounds susceptible to anodic polymerization were selected to study the effects of two solvents: acetic acid and ethyl acetate. Phenol and most of its derivatives, as well as resorcinol and 3,5-dihydroxybenzoic acid, exhibited typical electrode deactivation simi...

Open access Research Article 10.3390/org5040035

Conducting Polymers in Solar Cells: Insights, Innovations, and Challenges

Aliya Yelshibay, Sherif Dei Bukari, Bakhytzhan Baptayev & Mannix P. Balanay · Organics · 2024

The pursuit of sustainable energy sources has led to significant advances in solar cell technology, with conducting polymers (CPs) emerging as key innovations. This review examines how CPs improve the performance and versatility of three important types of solar cells: dye-sensit...

Open access Research Article 10.3390/org5040034

Simple and Selective Determination of Free Chlorine in Aqueous Solutions by an Electrophilic Aromatic Substitution Reaction Followed by Liquid Chromatography Coupled with Mass Spectrometry

Avital Shifrovitch, Moran Madmon, Tamar Shamai Yamin & Avi Weissberg · Organics · 2024

We developed a selective technique to rapidly measure free chlorine, which is the sum of elemental chlorine (Cl2), hypochlorous acid (HOCl), and hypochlorite (OCl−) in water samples via an electrophilic aromatic substitution reaction hyphenated with liquid chromatography-electros...

Open access Research Article 10.3390/org5040032