Practical Synthesis Research Articles

Unveiling the Potential: Remote Monitoring and Telemedicine in Shaping the Future of Heart Failure Management.

Heart failure (HF) remains a significant burden on global healthcare systems, necessitating innovative approaches for its management. This manuscript critically evaluates the role of remote monitoring and telemedicine in revolutionizing HF care delivery. Drawing upon a synthesis of current literature and clinical practices, it delineates the pivotal benefits, challenges, and personalized strategies associated with these technologies in HF management. The analysis highlights the potential of remote monitoring and telemedicine in facilitating timely interventions, enhancing patient engagement, and optimizing treatment adherence, thereby ameliorating clinical outcomes. However, technical intricacies, regulatory frameworks, and socioeconomic factors pose formidable hurdles to widespread adoption. The manuscript emphasizes the imperative of tailored interventions, leveraging advancements in artificial intelligence and machine learning, to address individual patient needs effectively. Looking forward, sustained innovation, interdisciplinary collaboration, and strategic investment are advocated to realize the transformative potential of remote monitoring and telemedicine in HF management, thereby advancing patient-centric care paradigms and optimizing healthcare resource allocation.

Mild and practical synthesis of 5-thio-d-glucopyranose and its pentaacetate derivatives

Two synthetic approaches for 5-thio-d-glucopyranose (5-TDGP) and its pentaacetates were described, focusing on different protective groups such as tert-butyldimethylsilyl and benzoyl employed to protect 3-OH. These protective groups were easily introduced from the beginning and can be removed during transformation from the corresponding mesylate of α-d-glucofuranose to 5,6-episulfide under mild conditions. In addition, a few purification manipulations were required for each approach. More importantly, 5-TDGP can be prepared using the two approaches starting from 200 g of starting material in 66.08 % and 64.4 % overall yields, respectively.

Practical Synthesis of Chiral α-Aminophosphonates with Weak Bonding Organocatalysis at ppm Loading

Practical Synthesis of Chiral α-Aminophosphonates with Weak Bonding Organocatalysis at ppm Loading

Green synthesis of nanostructured 1T/2H-MoS2 hybrid phase with polyol solvents and microwave heating

Green synthesis approaches have attracted greatly of attention in recent years since they address the issues associated with sustainability than conventional synthesis methods. New research fields in green nanoscience are being developed as a result of the incorporation of green chemistry principles into nanoscience. In this paper, the successful microwave-assisted green synthesis of MoS2 nanoparticles in a single pot using polyol solvents such as ethylene glycol and glycerol is demonstrated. The coexistence of 1T and 2H phases in MoS2 nanomaterials was determined using advanced techniques such as XRD, Raman, XPS, and TEM images. The highest 1T proportion obtained was 84.5% when compared to the 2H phase. The reaction mechanism and the phase transition between 1T and 2H were described and illustrated. The role of polyol solvents in the practical synthesis of nano MoS2 under microwave heating is also evaluated and explained. Due to the ability of the metallic 1T phase to enhance electrical conductivity, it is believed that hybrid nanostructures exhibit superior electrochemical performance for energy storage and conversion applications.

Efficient Biomedical Waste Management- Need of the Time: A Lesson Learnt From COVID-19 Pandemic

Background: Medical waste management (MWM) is of concern to the medical and general com-munity. Adequate knowledge regarding the management of healthcare waste is an important precursor to the synthesis of appropriate attitudes and practices of proper handling and disposal of medical waste by healthcare workers (HCWs). This study aimed to investigate the knowledge, attitudes, and practices of doctors, nurses, laboratory technicians, and housekeeping staff, regarding BMW management at a tertiary hospital in Telangana.Subjects and Method: This was a cross‑sectional study carried out at a tertiary health care center in Mahbubnagar district, Telangana, India. A stratified sampling technique was used to select the different cadre of healthcare providers from the hospital. A self‑administered questionnaire assessing the knowledge, attitude, and practices of 300 study participants was prepared. Data were analyzed using SPSS software version 26. Descriptive statistics were used to summarize the data.Results: The majority of respondents were nursing staff 43% (143/300) followed by doctors, interns, sanitation workers, and lab technicians. About 3/4th of the HCWs had experience of more than 3 years. Only 65% of the doctors have correct knowledge of the colour coding of bags. About only 20% of the nursing staff practiced segregation of the waste on-site. The practice of hand washing was significantly higher among female HCWs (p = 0.010).Conclusion: This study showed that there is a clear lack of BMW management among the HCW especially class IV staff who handle a large. Thus ongoing training should be provided to HCWs on MWM, with more attention to knowledge of regulatory requirements, and involvement of HCWs in the development of MWM policies to enhance compliance.

Gram-Scale Synthesis of (±)-Tylophorine

AbstractWe report a practical scalable synthesis of the natural product (±)-tylophorine by using an operationally simple protecting-group-free route from readily accessible starting materials. Synthesis of a cyclic N-acetyl diester compound through cyclization, followed by two key steps (decarboxylation and a Clemmensen reduction), provides access to the target molecule.

Practical synthesis of chenodeoxycholic acid from phocaecholic acid

In this study, we developed an effective method for the large-scale synthesis of chenodeoxycholic acid (CDCA) from phocaecholic acid (PhCA). A high total yield of up to 72 % was obtained via five steps including methyl esterification, Ts-protection, bromination, reduction, and hydrolysis. The structures of the intermediates were confirmed by 1H NMR (Nuclear Magnetic Resonance), 13C NMR, HRMS (High Resolution Mass Spectrometry), and IR (Infrared Spectroscopy) spectroscopies. This method offers a new and practical approach to the synthesizing of CDCA.

Microwave-assisted synthesis of novel pyrazolyl sulfones and their antimicrobial evaluation and time-resolved photoluminescence studies

This article reports an efficient and practical microwave-assisted MMPP-promoted synthesis of novel pyrazolyl sulfones from the corresponding 4-(alkyl/cycloalkylthio)-1H-pyrazoles. The reaction of 4-(alkyl/cycloalkylthio)-1H-pyrazoles with magnesium bis(monoperoxyphthalate)hexahydrate (MMPP) as an oxidizing agent afforded the corresponding 4-(alkyl/cycloalkylsulfonyl)-1,3-disubstituted-1H-pyrazoles in 85–95% yield. This method's benefits include its straightforward operation, simple workup, and use of an inexpensive, halogen-free MMPP oxidant that is easy to use and reasonably stable. All synthesized pyrazolyl sulfones were examined against bacterial and fungal strains, and notable antimicrobial activity was demonstrated by a few of the compounds. In order to investigate the prospect of connecting compounds with the highest yield and antimicrobial activity with their opto-electronic properties, time-resolved photoluminescence investigations for compounds 5a, 5b, and 5d were conducted. The tunable spectrum was observed in the micro-second time domain in all three cases, with fluorescent lifetime found higher in the compound having methyl group, intermediate with phenyl group, and lowest with the p-nitrophenyl group. Our procedures will encourage additional research into the valuable properties of pyrazolyl sulfones now that they are widely available with the structural complexity illustrated here.

Practical Synthesis of α,α-Dibromo Esters from Aldehydes.

Herein, we report an efficient and practical method for synthesizing α,α-dibromo esters, which are the precursors of ynolates, through the dibromination of aldehydes followed by oxidative esterification using iodine. Our method was successfully employed in a large-scale synthesis to yield more than 30 g of dibromo esters. These two steps can be performed in a one-pot manner, which makes the method adaptable even for aldehydes having low boiling points.

Sol-gel derived ternary CrxCuCx-1 compounds: Characterization, structural insights and biological properties

This research explores a novel method for synthesizing Cr-Cu-C ternary carbide using a sol-gel technique. The study targeted to produce a wide range of transition metal carbides within the Cr-Cu-C system by varying the elemental ratios. The primary goal was to observe how compositional changes affect the morphological, structural, and chemical properties of the resulting ternary compounds resembling the MAX phase. Another focus is to establish a practical synthesis route and evaluating the materials' suitability for different applications. The synthesis process involved combining metal nitrates and citric acid, followed by carbothermal reduction. Comprehensive characterization techniques, including FTIR, XRD, SEM, EDX, XPS, and Raman spectroscopy, were employed to thoroughly recognize the prepared materials. In XRD, the calculated lattice parameters indicated hexagonal structures for all the prepared ratios, confirming successful synthesis and providing insights into their morphological and chemical properties. This has also been supported with other characterization techniques, Additionally, the Cr-Cu-C materials demonstrated strong antifungal and antibacterial effects against Candida albicans, E. coli, and B. cereus, highlighting their potential for biomedical applications. Furthermore, their anti-cancer potential against HepG2 liver cancer cells was assessed, showing effectiveness and inhibition among the samples. These findings highlight the potential of the synthesized Cr-Cu-C materials in diverse biomedical applications, supported by their structural integrity, morphological features, and antimicrobial properties.

The Chemistry of Angucyclines.

Angucyclines and angucyclinones represent a class of natural compounds that belong to the group of aromatic polyketides. They exhibit a wide array of biological properties, such as antimicrobial, antiviral, and cytotoxic. Their considerable therapeutic potential and diverse scaffolds have attracted many synthetic chemists to devise novel strategies to construct their intricate molecular architecture. Over 300 class members have been isolated from natural sources, mainly from bacterial strains of Streptomyces species. This review highlights recent advancements in their synthesis, such as oxidative cyclization, photooxidation, and metal-catalyzed [4+2]-cycloaddition, which has facilitated the efficient and practical total syntheses of various angucycline and angucyclinone natural products.

Rh-Catalyzed Asymmetric Hydrogenation of 2-Substituted 4H-(Thio)chromenes for Synthesis of Chiral (Thio)chromanes.

Rh-catalyzed asymmetric hydrogenation of 2-substituted 4H-thiochromenes and 4H-chromenes was successfully developed. This method provided highly efficient access to a series of chiral 2-substituted thiochromanes and chromanes in high yields with excellent enantioselectivities (up to 99% yield, 86-99% ee). The obtained chiral 2-substituted thiochromane products were also successfully transformed to corresponding chiral α-substituted sulfoxides and sulfones with excellent enantioselectivities. Furthermore, this highly enantioselective hydrogenation process could be successfully applied to the concise and practical synthesis of the chiral pharmaceutical BW683C.

Recent Advances in Halogen-Metal Exchange Reactions.

ConspectusThe halogen-metal exchange reaction is a very powerful method for preparing functionalized organometallic reagents in the fields of organic and organometallic chemistry. Since its inception, significant interest has been directed toward the on-demand development of new halogen-metal exchange reactions, primarily through the upgrading of exchange reagents. The enduring quest for optimal reactivity, superior functional group compatibility, and innovative synthetic applications of exchange reagents remains a fundamental objective. In the past several years, the emergence of some significant discoveries in halogen-metal exchange reactions has proclaimed a renaissance to this field. This Account outlines the latest advances within the domain contributed by the Knochel group, including the main points as follows.The stereoretentive I/Li exchange on stereodefined secondary alkyl iodides was developed for the synthesis of nonstabilized chiral secondary alkyllithium reagents. This provided a straightforward method to access chiral organolithium reagents, which can be trapped by various electrophiles or transmetalated with other metals such as copper, zinc, and magnesium, thus enabling the stereoselective synthesis of a series of functionalized compounds and natural products.Faster halogen-magnesium and halogen-zinc exchanges in toluene were realized using a novel kind of exchange reagent complexed with lithium alkoxide. These highly efficient exchange reactions are much faster than traditional ones and performed in an industrially friendly solvent. These advantages are of great value in practical synthesis, paving the way for new developments in this evolving area.Halogen-lanthanide exchanges and their novel applications in organic synthesis were established. These new exchanges introduced the lanthanide metals into halogen-metal exchange reactions for the first time, thereby opening new avenues in synthetic chemistry. Building on these achievements, a comparative analysis of the exchange reaction rates by kinetic study has quantified the relationship between the electronegativity of metals and the rates of halogen-metal exchanges.Br/Na exchange in continuous flow was achieved using a hexane-soluble exchange reagent, 2-ethylhexylsodium. This approach effectively circumvented the poor solubility of the organosodium reagent, which has proven to be of significant practical value and greatly enhanced the synthetic utility of the organosodium reagent in organic synthesis.These remarkable breakthroughs as mentioned above are fueled mainly by upgrading the exchange reagents, resulting in the development of new halogen-metal exchange reactions and innovative applications in organic synthesis. Given the importance of halogen-metal exchanges in synthetic chemistry, the pursuit of other types of exchange reactions, particularly those involving new metals, will be in continuous demand. This Account provides a timely summary of recent progress and will undoubtedly inspire further advances to drive this research field forward.

Property registration of the ownership right to the agricultural land

The paper highlights the existing legal, doctrinal, and practical state in Georgia and other countries abroad in the context of registration of ownership rights to agricultural plots by legitimate owners. Hence, the paper is a synthesis of theory and practice dealing with the social and state significance of agricultural land and voices several problems that arise in the process of recognizing the right to ownership of agricultural land plots legally owned by individuals or legal entities. In addition, it also emphasizes the reasons that lead to these problems both at the legislative and doctrinal levels. This article reviews the approach of Georgian law in terms of obtaining rights to agricultural land, especially the mechanisms of registration of property rights by legitimate owners. Historical, and comparative legal research methods used in the paper, cover the past, present, and future situation in terms of legal development of the agricultural field.

Problems and prospects for reducing statelessness in the Republic of Kazakhstan

The article discusses the problematic issues of legal regulation and statelessness reducing practice in the Republic of Kazakhstan. Statelessness reduction is considered as a political, economic, and legal process that is important for the legal state, in which universal standards in the citizenship sphere are implemented. The research purpose is a comprehensive analysis, theory and practice synthesis of reducing statelessness in Kazakhstan, as well as identifying the problems of reducing statelessness legalregulation and developing ways to solve them. The research is carried out by general scientific and special legal methods, theoretical provisions and legal norms analysis and generalization. The statelessness reduction is considered as a political phenomenon with a legal form. On the comparative legal method basis, the main trends in the development in “reduction of statelessness” institution at the present time are revealed. The main result of the research is the provision on the need to improve legal measures aimed at reducing statelessness in Kazakhstan legislation. To conclude, it is proposed to supplement the family law legal norms, legislation on citizenship and by-laws that determine the stateless person legal status.

Efficient Trifluoromethylation of Halogenated Hydrocarbons Using Novel [(bpy)Cu(O2CCF2SO2F)2] Reagent.

This study introduces a novel trifluoromethylating reagent, [(bpy)Cu(O2CCF2SO2F)2], notable for not only its practical synthesis from cost-effective starting materials and scalability but also its nonhygroscopic nature. The reagent demonstrates high efficiency in facilitating trifluoromethylation reactions with various halogenated hydrocarbons, yielding products in good yields and exhibiting broad functional group compatibility. The development of [(bpy)Cu(O2CCF2SO2F)2] represents an advancement in the field of organic synthesis, potentially serving as a valuable addition to the arsenal of existing trifluoromethylating agents.

Study on Pyridine-Boryl Radical-Promoted, Ketyl Radical-Mediated Carbon-Carbon Bond-Forming Reactions.

Ketyl radicals are synthetically versatile reactive species, but their applications have been hampered by harsh generation conditions employing highly reducing metals. Recently, the pyridine-boryl radical received wide attention as a promising organic reductant because of its mildness as well as convenience in handling. While probing the utility of the pyridine-boryl radical, our group observed facile pinacol coupling reactivity that had not been known at that time. This serendipitous finding was successfully rendered into a practical synthesis of tetraaryl-1,2-diols in up to 99% yield within 1 h. Subsequently, upon examinations of various reaction manifolds, a diastereoselective ketyl-olefin cyclization was accomplished to produce cycloalkanols such as trans-2-alkyl-1-indanols. Compared to the previous methods, the stereocontrolling ability was considerably enhanced by taking advantage of the structurally modifiable boryl group that would be present near the bond-forming site. In this full account, our synthetic efforts with the O-boryl ketyl radicals are disclosed in detail, covering the discovery, optimization, scope expansion, and mechanistic analysis, including density functional theory (DFT) calculations.

Potentially Inappropriate Medication Use in Primary Care in Switzerland

Potentially inappropriate medication (PIM) exposes patients to an increased risk of adverse outcomes. Many lists of explicit criteria provide guidance on identifying PIM and recommend alternative prescribing, but the complexity of available lists limits their applicability and the amount of data available on PIM prescribing. To determine PIM prevalence and the most frequently prescribed PIMs according to 6 well-known PIM lists and to develop a best practice synthesis for clinicians. This cross-sectional study used anonymized electronic health record data of Swiss primary care patients aged 65 years or older with drug prescriptions from January 1, 2020, to December 31, 2021, extracted from a large primary care database in Switzerland, the FIRE project. Data analyses took place from October 2022 to September 2023. PIM prescription according to PIM criteria operationalized for use with FIRE data. The primary outcomes were PIM prevalence (percentage of patients with 1 or more PIMs) and PIM frequency (percentage of prescriptions identified as PIMs) according to the individual PIM lists and a combination of all 6 lists. The PIM lists used were the American 2019 Updated Beers criteria, the French list by Laroche et al, the Norwegian General Practice Norwegian (NORGEP) criteria, the German PRISCUS list, the Austrian list by Mann et al, and the EU(7) consensus list of 7 European countries. This study included 115 867 patients 65 years or older (mean [SD] age, 76.0 [7.9] years; 55.8% female) with 1 211 227 prescriptions. Among all patients, 86 715 (74.8%) were aged 70 years or older, and 60 670 (52.4%) were aged 75 years or older. PIM prevalence among patients 65 years or older was 31.5% (according to Beers 2019), 15.4% (Laroche), 16.1% (NORGEP), 12.7% (PRISCUS), 31.2% (Mann), 37.1% (EU[7]), and 52.3% (combined list). PIM prevalence increased with age according to every PIM list (eg, according to Beers 2019, from 31.5% at age 65 years or older to 37.4% for those 75 years or older, and when the lists were combined, PIM prevalence increased from 52.3% to 56.7% in those 2 age groups, respectively). PIM frequency was 10.3% (Beers 2019), 3.9% (Laroche), 4.3% (NORGEP), 2.4% (PRISCUS), 6.7% (Mann), 9.7% (EU[7]), and 19.3% (combined list). According to the combined list, the 5 most frequently prescribed PIMs were pantoprazole (9.3% of all PIMs prescribed), ibuprofen (6.9%), diclofenac (6.3%), zolpidem (4.5%), and lorazepam (3.7%). Almost two-thirds (63.5%) of all PIM prescriptions belonged to 5 drug classes: analgesics (26.9% of all PIMs prescribed), proton pump inhibitors (12.1%), benzodiazepines and benzodiazepine-like drugs (11.2%), antidepressants (7.0%), and neuroleptics (6.3%). In this cross-sectional study of adults aged 65 or older, PIM prevalence was high, varied considerably depending on the criteria applied, and increased consistently with age. However, only few drug classes accounted for the majority of all prescriptions that were PIM according to any of the 6 PIM lists, and by considering this manageable number of drug classes, clinicians could essentially comply with all 6 PIM lists. These results raise awareness of the most common PIMs and emphasize the need for careful consideration of their risks and benefits and targeted deprescribing.

Digital Social Reading in Second Language Learning and Teaching: Synthesis of Current Research and Pedagogical Practices

Digital Social Reading in Second Language Learning and Teaching: Synthesis of Current Research and Pedagogical Practices

A Practice Synthesis and X-Ray Crystal Structure of (E)-4-(1-naphthylvinyl)pyridine and Related Compounds

The synthesis, structure, and photoreactivity of (E)-4-(1-naphthylvinyl)pyridine ((E)-4-1-nvp; 1) and its coordination compounds has been investigated. Synthesis of (1) via Wittig olefination resulted in a challenging isomer separation and purification process. By synthesizing (1) via a Horner-Wadsworth-Emmons reaction, high stereoselectivity and purity was achieved. The crystal structure of (1) revealed significant intramolecular rotation facilitated by CH···π interactions, ultimately preventing olefin stacking in both the solid-state structure of (1) and a cocrystal with a structural isomer. Novel Ag(I) and Zn(II) coordination complexes that utilize (1) as a ligand were also synthesized and fully characterized, facilitating the examination of the relationship between molecular planarity and secondary bonding contributions via Hirshfeld surface analyses. These findings deepen our understanding of intermolecular interactions involving (E)-4-1-nvp and offer insights for designing novel photoresponsive materials capable of solid-state [2+2] cycloaddition.