Article
Chemistry, Physical
Rizana Yusof, Khairulazhar Jumbri, Mohd Basyaruddin Abdul Rahman
Summary: MD simulations were used to study a DES synthesized from TBAB and EG, showing that the introduction of EG molecules significantly affects the properties of the DES, influencing ionic interactions and changing its properties.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Biochemistry & Molecular Biology
Natasa Karic, Marija Vukcevic, Mirjana Ristic, Aleksandra Peric-Grujic, Aleksandar Marinkovic, Katarina Trivunac
Summary: A novel method for starch modification using a spray system without solvents has been developed in this study, utilizing betaine hydrochloride (BHC) as a cationic reagent. Compared to the commonly used GTMAC, BHC is more eco-friendly with lower toxicity and cost. The modified starches showed increased solubility and swelling capacity, along with decreased viscosity.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Fatima Klongdee, Kittipong Chainok, Sujittra Youngme, Jaursup Boonmak
Summary: The reaction of Cu(ii) and pyrazole-3,5-dicarboxylic acid (H(3)pzdc) with 1,2-di(4-pyridyl)ethane (bpa) under various temperatures and solvents leads to the formation of seven new Cu(ii) complexes. The crystal structures and water molecule contents of these complexes are different.
Article
Chemistry, Organic
Dalavai Pavithra, K. R. Ethiraj
Summary: A solvent-free synthesis of 2H-indazolo[1,2-b]phthalazinetriones 4 and pyrazolo[1,2-b]phthalazines 6 scaffolds using benzyl alcohol 1 via TEMPO/CAN and TBAB mediated aerobic oxidation, sequential addition-cyclization with phthalhydrazide 2 and beta-diketones 3,5 is reported. The experimental strategy offers several advantages, such as simple workup, inexpensive chemicals without any use of solvents, and short reaction time.
POLYCYCLIC AROMATIC COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Rayenne Redjemia, Abdeslem Bouzina, Yousra Ouafa Bouone, Achraf Mansouri, Rania Bahadi, Malika Berredjem
Summary: The development of novel, clean, and efficient methods for the preparation of compounds is a major research focus in organic chemistry. In this study, copper bromide was used as a heterogeneous catalyst for the synthesis of beta-enaminone derivatives through condensation reactions. The desired products were obtained with high yields and short reaction times.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Organic
Jiawei Huang, Xiaoman Li, Liang Xu, Yu Wei
Summary: A three-component oxychalcogenation reaction is achieved in this study, using alkenes, diselenides/thiophenols, and H2O/alcohols as reactants. Tetrabutylammonium tribromide (TBATB) and dimethylsulfoxide (DMSO) are employed as the catalyst and terminal oxidant, respectively, enabling the difunctionalization transformation. This metal-free reaction system shows excellent functional group compatibility and provides a unified and practical approach to access beta-hydroxyl or beta-alkoxy organochalcogenides.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Applied
Siyu Zhang, Joseph R. Hyatt, Casimir C. Akoh
Summary: In this study, a multi-functional galloylated structured lipid DOGG was successfully synthesized using immobilized food grade Candida antarctica lipase B. The reaction conditions were optimized and the structure of the product was confirmed. The enzyme showed good reusability and DOGG has potential applications as an antioxidant and nutraceutical.
Article
Chemistry, Physical
Hadis Goudarzi, Davood Habibi, Arezo Monem
Summary: A novel gentisic acid-based deep eutectic solvent was prepared and used as a catalyst for the green synthesis of diverse compounds via a three-component reaction under solvent-free conditions.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Organic
Mahla Dadaei, Hossein Naeimi
Summary: This study presents an efficient and rapid method for synthesizing pyranopyrazole derivatives using CoCuFe2O4 magnetic nanocrystals as reusable catalyst under environmentally friendly conditions.
POLYCYCLIC AROMATIC COMPOUNDS
(2022)
Article
Chemistry, Applied
Siyu Zhang, Joseph R. Hyatt, Casimir C. Akoh
Summary: A novel diacylglycerol-based galloyl structured lipid, 1,2-dipalmitoylgalloylglycerol (DPGG), was synthesized through enzymatic transesterification process, and the structure of the reaction product was elucidated. The reaction conditions affecting the yield of DPGG were optimized in the study.
Article
Chemistry, Multidisciplinary
Parichehr Kamalzare, Behrooz Mirza, Somayeh Soleimani-Amiri
Summary: An environmentally friendly and efficient method for the synthesis of biologically active 1,4-dihydropyridine derivatives using chitosan magnetic nanocomposite as a recyclable catalyst under solvent-free conditions has been developed. The method offers advantages such as mild reaction conditions, high efficiency, and catalyst reusability.
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY
(2021)
Article
Engineering, Environmental
Hai Truong Nguyen, Tan Van Le, Phuong Hoang Tran
Summary: A sulfonated amorphous carbon (AC-SO3H) prepared from rice husk was characterized and used to synthesize pyrano[2,3-c]pyrazoles with moderate to good yields in a deep eutectic solvent. The catalytic system, easily synthesized from low-cost, non-toxic, eco-friendly materials, has potential for large-scale applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Yin Liang, Qiuyu Shang, Meili Li, Shuai Zhang, Xinfeng Liu, Qing Zhang
Summary: A solvent recrystallization strategy was proposed to reduce the number of pinholes in perovskite films, resulting in amplified spontaneous green emissions with a low threshold and high net modal gain. The reduced threshold is attributed to low propagation loss and suppressed Auger recombination, which are achieved by forming a pinhole-free surface and enlarging grain size.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Soumya Dutta, Amit Saha, Brindaban C. Ranu
Summary: This article provides a comprehensive review of recent developments in the synthesis of organoselenium compounds under solvent free conditions using conventional and modern techniques such as ball milling, visible light irradiation, and microwave irradiation. The green aspects and significant advantages of solvent free reactions are highlighted.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Ronaldo Rodrigues da Sousa, Ayla Sant'Ana da Silva, Roberto Fernandez-Lafuente, Viridiana Santana Ferreira-Leitao
Summary: The adoption of biocatalysis in solvent-free systems for ester production has been studied, with the development of a mathematical tool called SER for optimization of reaction conditions. The use of SER successfully predicted high conversion rates and allowed for reduction in the number of experiments and biocatalyst loadings.
