Chemistry Journal of Moldova

Accepted papers

Nuzhat Rehman, Ayaz Mahmood Dar, Raja Feroz Ahmad Haji, Sharief-ud-din Khan, Deepak Pareek, Saleem Farooq, Bashir Ahmad Dar

Field: Organic chemistry
Type: Research paper
multicomponent reaction, heteropolyacid, green chemistry approach, recyclable catalyst.
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https://doi.org/10.19261/cjm.2024.1135

Abstract (PDF)
Graphical Abstract: This study presents an eco-friendly method for synthesizing 3,4-dihydropyrimidin-2(1H)-ones (DHPMs) through the Biginelli reaction. A novel Heteropolyacid-Clay (HPA-Clay) catalyst, formed by immobilizing H5PV2W10O40 on Montmorillonite KSF clay, displays enhanced stability and catalytic efficiency. Operating under solvent-free, one-pot conditions, the process delivers DHPMs with high yields and shortened reaction times. Catalyzed by 2 mol% HPA-Clay, it adheres to green chemistry principles, emphasizing cost-efficiency, environmental sustainability, and recyclability. The catalyst consistently performs over multiple cycles, showcasing promise for advancing Biginelli reactions.

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Alexandru Ciocarlan, Lidia Lungu, Svetlana Blaja, Sergiu Shova, Aculina Aricu

Field: Natural product chemistry and synthesis
Type: Research paper
(+)-larixol, enolacetylation, dye-sensitized photooxidation, reduction, X-ray analysis.
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https://doi.org/10.19261/cjm.2024.1156

Graphical Abstract: The main purpose of this research was the synthesis of highly functionalized derivatives of (+)-larixol by combination of classical and nonconventional method, like dye-sensitized photooxidation with preservation of outside chain. As a result, a series of four new cycle B derivatives of (+)-larixol were obtained. The structure of all synthesized compounds was fully confirmed by spectral method (IR, 1H and 13C NMR) and for compound containing endoperoxide functional group, additionally by single crystal X-ray diffraction analysis.



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Viorina Gorinchoy, Olesea Cuzan, Sergiu Shova, Vasile Lozan

Field: Inorganic and coordination chemistry
Type: Research paper
oxo-carboxylate, iron(III), calcium(II), heteronuclear cluster, salicylic acid, s-d metals.
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https://doi.org/10.19261/cjm.2024.1168

Abstract (PDF)
Graphical Abstract:
A new heterometallic iron(III) compound, derivative of salicylic acid, catena–poly[bis(methanol)-bis(N,N–dimethylacetamide)–tris(m–salicylato)–bis(m–salicyl)–dicalcium(II) iron(III)], has been synthesized and characterized by infrared spectroscopy, single-crystal X-ray diffraction and elemental analysis. Single-crystal X-ray diffraction study revealed that synthesized compound forms an 1D coordination polymer with general formula {[FeCa2(Sal)2(SalH)3 (DMA)2(CH3OH)2]}n. The compound crystallizes in the P21/c space group of the monoclinic system with the following unit cell parameters: а= 9.76785(9), b= 37.3386(4), c= 13.82575(12) Å, β= 103.6421(9)°, Z= 4. The independent unit cell of the obtained compound contains one iron and two calcium ions, in which the iron(III) ion has an octahedral coordination sphere. The different coordination modes of the five molecules of salicylic anions revealed by IR analysis were confirmed by X-ray studies, showing that the salicylate anions play the role of bridging ligands and coordinate in three different ways, thus the carboxylic group forms bridges through three different coordination pathways, namely: bidentate, tridentate and pentadentate fashion.


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Kaltrina Jusufi, Enju Wang, Taha Fadlou Allah, Ali A. Shohatee, Sudhir Kumar Singh, Makfire Sadiku

Field: Ecological chemistry
Type: Short communication
environmental pollution, remediation, biosorption, lead, chamomile residues.
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https://doi.org/10.19261/cjm.2024.1144

Abstract (PDF)
Graphical Abstract: This study examines the potential use of a low-cost biosorbent - chamomile tea residues, as an alternative to traditional adsorbents for removing Pb2+ ions from aqueous solutions. The results show that lead concentration is reduced under optimized conditions, achieving an impressive nearly 50% Pb2+ ions removal with a mere just 0.05 g of the waste material, depicting chamomile tea residues as efficient biosorbent in lead removal.


Downloads: 4

Serghei Pogrebnoi

Field: Organic chemistry
Type: Review
acetophenone, vinyl-1,2,4-triazole, tetrazole-pyrazoline hybrid, Claisen-Schmidt condensation, chromenol.
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https://doi.org/10.19261/cjm.2024.1139

Abstract (PDF)
Graphical Abstract: The review is dedicated to the synthesis of 1,3-diaryl-2-propen-2-ones derived from aromatic methyl ketones. The article highlights advancements in the synthesis of chalcones and hybrid compounds based on chalcones containing 1,2,4-triazole, tetrazole-pyrazoline, and chromenol moieties. The biological activity of the synthesized compounds is comprehensively discussed. 




Downloads: 3

Recep Taş, Ebru Köroğlu, Ahmet Karakuş, Ali Savaş Bülbül, Nilay Akkuş Taş

Field: Ecological chemistry
Type: Research paper
biosynthesis, silver, zinc, nanoparticle, photocatalysis.
 
https://doi.org/10.19261/cjm.2024.1113

Abstract (PDF)
Graphical Abstract: This study explores the green synthesis of silver and zinc nanoparticles using Laurel extract as a reducing agent. The biosynthesized nanoparticles were characterized for size, shape, and structure. Photocatalytic activities were evaluated for potential environmental applications. Results show promising prospects for sustainable nanoparticle synthesis and efficient photocatalytic degradation.