Reactions最新文献_第8页

A Brief Review: Advancement in the Synthesis of Amine through the Leuckart Reaction Leuckart反应合成胺的研究进展

Reactions Pub Date : 2023-01-29 DOI: 10.3390/reactions4010007

Q. Umar, Mei Luo

引用次数: 1

Employing Molecular Docking Calculations for the Design of Alkyl (2-Alcoxy-2-Hydroxypropanoyl)-L-Tryptophanate Derivatives as Potential Inhibitors of 11β-Hydroxysteroid Dehydrogenase Type 1 (11β-HSD1) 利用分子对接计算设计11β-羟基类固醇脱氢酶1型(11β-HSD1)抑制剂的烷基(2-醇基-2-羟丙基)- l -色氨酸衍生物

Reactions Pub Date : 2023-01-19 DOI: 10.3390/reactions4010006

Diego Quiroga

引用次数: 0

Acknowledgment to the Reviewers of Reactions in 2022 对2022年《反应》评审者的感谢

Reactions Pub Date : 2023-01-17 DOI: 10.3390/reactions4010005

引用次数: 0

Determination of Kinetic Parameters of Fischer–Tropsch Synthesis in the Presence of a Granular Cobalt Catalyst 颗粒钴催化剂存在下费托合成动力学参数的测定

Reactions Pub Date : 2023-01-11 DOI: 10.3390/reactions4010004

L. Sineva, K. Gryaznov, Victor De, Andrei Gorshkov, V. Mordkovich

引用次数: 0

A Critical Review of Sustainable Vanillin-modified Vitrimers: Synthesis, Challenge and Prospects 可持续香草素修饰的玻璃体:合成、挑战与展望

Reactions Pub Date : 2023-01-02 DOI: 10.3390/reactions4010003

M. A. Rashid, Md Nabiul Hasan, MD Anisur Rahman Dayan, Mohammad Salman Ibna Jamal, M. K. Patoary

{"title":"A Critical Review of Sustainable Vanillin-modified Vitrimers: Synthesis, Challenge and Prospects","authors":"M. A. Rashid, Md Nabiul Hasan, MD Anisur Rahman Dayan, Mohammad Salman Ibna Jamal, M. K. Patoary","doi":"10.3390/reactions4010003","DOIUrl":"https://doi.org/10.3390/reactions4010003","url":null,"abstract":"Nearly 90% of thermosets are produced from petroleum resources, they have remarkable mechanical characteristics, are chemically durable, and dimensionally stable. However, they can contribute to global warming, depletion of petroleum reserves, and environmental contamination during manufacture, use, and disposal. Using renewable resources to form thermosetting materials is one of the most crucial aspects of addressing the aforementioned issues. Vanillin-based raw materials have been used in the industrial manufacturing of polymer materials because they are simple to modify structurally. Conversely, traditional thermosetting materials as a broad class of high-molecular-weight molecules are challenging to heal, decompose and recover owing to their permanent 3-D crosslinking network. Once the products are damaged, recycling issues could arise, causing resource loss and environmental impact. It could be solved by inserting dynamic covalent adaptable networks (DCANs) into the polymer chains, increasing product longevity, and minimizing waste. It also improves the attractiveness of these products in the prospective field. Moreover, it is essential to underline that increasing product lifespan and reducing waste is equivalent to reducing the expense of consuming resources. The detailed synthesis, reprocessing, thermal, and mechanical characteristics of partly and entirely biomass thermosetting polymers made from vanillin-modified monomers are covered in the current work. Finally, the review highlights the benefits, difficulties, and application of these emerging vanillin-modified vitrimers as a potential replacement for conventional non-recyclable thermosets.","PeriodicalId":20873,"journal":{"name":"Reactions","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83644973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Amphotericin B 两性霉素B

Reactions Pub Date : 2023-01-01 DOI: 10.1007/s40278-023-31885-z

引用次数: 0

The Alkyne Zipper Reaction: A Useful Tool in Synthetic Chemistry 炔拉链反应:合成化学中的一个有用工具

Reactions Pub Date : 2022-12-30 DOI: 10.3390/reactions4010002

Åshild Moi Sørskår, Helge Ø. K. Stenstrøm, Y. Stenstrøm, S. Antonsen

引用次数: 0

Hydrothermal Synthesis of Vanadium Oxide Microstructures with Mixed Oxidation States 水热合成具有混合氧化态的氧化钒微结构

Reactions Pub Date : 2022-12-28 DOI: 10.3390/reactions4010001

D. Navas

{"title":"Hydrothermal Synthesis of Vanadium Oxide Microstructures with Mixed Oxidation States","authors":"D. Navas","doi":"10.3390/reactions4010001","DOIUrl":"https://doi.org/10.3390/reactions4010001","url":null,"abstract":"This review is based on hydrothermal synthetic procedures that generate different vanadium oxide microstructures with mixed oxidation states, where different vanadium (V5+) precursors (vanadate, vanadium oxide, vanadium alkoxide, etc.,) are used to obtain various types of morphologies and shapes, such as sea urchins, cogs, stars, squares, etc., depending on the amphiphilic molecules (usually surfactants) exhibiting a structural director role containing an organic functional group such as primary amines and thiols, respectively. The performance of sol–gel methodology, where intercalation processes sometimes take place, is crucial prior to the hydrothermal treatment stage to control the V4+/V5+. In every synthesis, many physical and chemical parameters, such as temperature, pH, reaction time., etc., are responsible for influencing the reactions in order to obtain different products; the final material usually corresponds to a mixed oxidation state structure with different content rates. This feature has been used in many technological applications, and some researchers have enhanced it by functionalizing the products to enhance their electrochemical and magnetic properties. Although some results have been auspicious, there are a number of projects underway to improve the synthesis in many ways, including yield, secondary products, size distribution, oxidation state ratio, etc., to achieve the best benefits from these microstructures in the large number of technological, catalytic, and magnetic devices, among other applications.","PeriodicalId":20873,"journal":{"name":"Reactions","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86187490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the Synthetic Approach Influence in Ni/CeO2-Based Catalysts for Methane Dry Reforming 合成方法对Ni/ ceo2基甲烷干重整催化剂影响的研究

Reactions Pub Date : 2022-12-16 DOI: 10.3390/reactions3040043

M. Pizzolato, Giulia Da Pian, E. Ghedini, A. di Michele, F. Menegazzo, G. Cruciani, M. Signoretto

{"title":"Study of the Synthetic Approach Influence in Ni/CeO2-Based Catalysts for Methane Dry Reforming","authors":"M. Pizzolato, Giulia Da Pian, E. Ghedini, A. di Michele, F. Menegazzo, G. Cruciani, M. Signoretto","doi":"10.3390/reactions3040043","DOIUrl":"https://doi.org/10.3390/reactions3040043","url":null,"abstract":"This study focuses on the synthetic approach influence in morphostructural features and catalytic performances for Ni/CeO2 catalysts. Incipient wetness impregnation, coprecipitation and nitrate combustion were studied as catalyst preparation approaches, and the materials were then tested at 700 °C for methane dry reforming (MDR). The morphostructural properties of the materials were deeply studied using several techniques, such as temperature programmed reduction (TPR), to investigate reducibility and support-metal interaction, N2 physisorption to evaluate the porosity and the surface area, scanning electron microscopy (SEM) and X-ray diffraction (XRD) to estimate Ni dispersion, and temperature programmed oxidation (TPO) to identify the type and amount of coke formed on catalysts’ surface after reaction. From the data obtained, coprecipitation turned out to be the most suitable technique for this application because this catalyst was able to reach 70% of CO2 conversion and 30% methane conversion, with an H2 yield of 15% and 30% yield of CO at the end of the 30 h test. Moreover, it was also the catalyst with the highest metal dispersion, the strongest interaction with the support, and the lowest coke deposition.","PeriodicalId":20873,"journal":{"name":"Reactions","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88260135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Three-Component Condensation of β-Ketonitriles, 4-Fluorobenzaldehyde, and Secondary Cyclic Amines β-酮腈、4-氟苯甲醛和仲环胺的三组分缩合

Reactions Pub Date : 2022-12-12 DOI: 10.3390/reactions3040042

D. Osipov, K. S. Korzhenko, V. Osyanin

引用次数: 0