You're using an outdated browser. Please upgrade to a modern browser for the best experience.
Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort by:
Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)
Filter:
All Topic Review Biography Peer Reviewed Entry Video Entry
Biography
Pierre Vogel
Professor Pierre Vogel was born in Cully (Switzerland). He did his Ph. D under supervision of Prof. H. Prinzbach, at the Institute of Organic Chemistry, in the University of Lausanne. He carried out post-doctoral research at Yale University (New Haven, Connecticut, USA), collaborating with Profs. M. Saunders, J.A. Berson, K.A. Wiberg and P.v.R. Schleyer (Princeton University). He then moved to M
  • 1.6K
  • 22 Sep 2022
Topic Review
The Genus Lagochilus (Lamiaceae)
The genus Lagochilus (Lamiaceae) is native to Central, South-Central, and Eastern Asia. 
  • 1.6K
  • 29 Jan 2021
Topic Review
Synthesis Route of C6F12O
C6F12O is in great demand on the market with its excellent environmental performance and broad application prospects. It is of great significance to the development of a synthetic route for C6F12O, suitable for industrial production.
  • 1.6K
  • 15 Apr 2022
Topic Review
Industrial Applications of Microfluidic Systems
With the proliferation of microelectromechanical systems (MEMS) technology, the syntheses of microfluidic devices or microdroplets have become increasingly important as tools for chemical analysis and synthesis. Microfluidic devices (microreactors, microchemical chips, etc.) that integrate the functions of chemical synthesis, analysis equipment, and chemical plants in a compact form are being investigated.
  • 1.6K
  • 26 Jan 2024
Topic Review
Asymmetric Catalytic Ketimine Mannich Reactions
These ketimines are less electrophilic and thus, arguably, more challenging substrates. 3-Aryl-3-hydroxyisoindolin-1-ones are often employed as stable precursors for the corresponding endocyclic N-carbonyl diaryl ketimines. This class of ketimines is useful synthons to access chiral isoindolin-1-ones that are an important motif found in numerous biologically relevant molecules and natural products.
  • 1.6K
  • 05 Aug 2021
Topic Review
Magnetic Catalysts in Ullmann-Type N-Arylation Reactions
Ullmann-type C–N heterocoupling reactions have been applied for the syntheses of N-arylated amines. Transition metal-catalyzed N-arylations have been recognized as particularly efficient procedures for the preparation of nitrogen-containing aromatic systems. These reactions typically carried out under optimized conditions, have also been found to be suitable for the synthesis of complex molecules with other functional groups, including natural products, drugs, or pharmaceuticals. Most importantly, copper-catalyzed N-arylations have been studied and employed in the total synthesis of biologically active compounds. The construction of fused N-heterocyclic compounds also remained the subject of extensive research because of their potential applications in drug discovery and the development of functional materials. 
  • 1.6K
  • 02 Aug 2023
Topic Review
Haloanisoles in Wine
Haloanisoles in wine have devastating effects on the aroma and quality of the wine. 2,4,6-trichloroanisole (TCA) was discovered and coined as “cork taint” in 1982. There are many more haloanisoles that contribute to these musty odors, including 2,4,6-Tribromoanisiole (TBA), 2,3,4,6-tetrachloroanisole (TeCA), and pentachloroanisole (PCA). While TCA, TeCA, and PCA can all be traced back to the cork, TBA’s phenol precursor is ubiquitous in building material as a fire retardant, making it a much larger vector. All haloanisoles have the ability to aerosolize and resettle onto surfaces in the winery, making this a very difficult problem to eliminate. 
  • 1.6K
  • 23 Mar 2023
Topic Review
Medicinally Viable Plants of the Genus Tylophora
Plants of the genus Tylophora have commonly been used in traditional medicine in various communities, especially in the tropical and subtropical regions of climatic zones. Of the nearly 300 species reported in the Tylophora genus, eight are primarily used in various forms to treat a variety of bodily disorders based on the symptoms. Certain plants from the genus have found use as anti-inflammatory, anti-tumor, anti-allergic, anti-microbial, hypoglycemic, hypolipidemic, anti-oxidant, smooth muscle relaxant, immunomodulatory, and anti-plasmodium agents, as well as free-radical scavengers. Pharmacologically, a few plant species from the genus have exhibited broad-spectrum anti-microbial and anti-cancer activity, which has been proven through experimental evaluations. Some of the plants in the genus have also helped in alcohol-induced anxiety amelioration and myocardial damage repair. The plants belonging to the genus have also shown diuretic, anti-asthmatic, and hepato-protective activities. Tylophora plants have afforded diverse structural bases for secondary metabolites, mainly belonging to phenanthroindolizidine alkaloids, which have been found to treat several diseases with promising pharmacological activity levels. 
  • 1.6K
  • 09 Mar 2023
Topic Review
Deep Eutectic Systems as Alternative Solvents
Chemists in the medicinal chemistry field are constantly searching for alternatives towards more sustainable and eco-friendly processes for the design and synthesis of drug candidates. The pharmaceutical industry is one of the most polluting industries, having a high E-factor, which is driving the adoption of more sustainable processes not only for new drug candidates, but also in the production of well-established active pharmaceutical ingredients. Deep eutectic systems (DESs) have emerged as a greener alternative to ionic liquids, and their potential to substitute traditional organic solvents in drug discovery has raised interest among scientists. 
  • 1.6K
  • 28 Feb 2024
Topic Review
Stevia Genus
Phytochemistry and biological activities update of Stevia genus.
  • 1.6K
  • 21 May 2021
Topic Review
Synthesis Approaches of Aza-Dibenzocyclooctyne Derivatives
Cyclooctyne molecules have found wide applications in the strain-promoted azide–alkyne cycloaddition (SPAAC) reactions, which avoid the biotoxicity caused by the use of Cu(I) catalysts. Among the various cyclooctyne systems, dibenzocyclooctyne (DBCO) series have displayed the highest reaction activity.
  • 1.5K
  • 06 May 2023
Topic Review
Natural 4-Hydroxy-2-pyrones
4-Hydroxy-2-pyrones as polyketides are widespread in Nature and possess versatile bioactivity that makes them an attractive target for synthesis and modification. Also these pyrones bear several electrophilic and nucleophilic centers that determine their application in organic synthesis.
  • 1.5K
  • 02 Jan 2024
Topic Review
C–H Functionalisation
C–H bond functionalisation describes the transformation of a C-H bonds into a C-X bonds (X = C, N, O, B, halides, among many others). The term is typically associated with transition metals in processes like C-H activation. However, other methods such as nitrene/carbene insertion and hydrogen atom transfer (HAT) can also be used to functionalise C-H bonds with varying selectivity and ability to introduce different functional groups depending on the method used. 
  • 1.5K
  • 09 Nov 2023
Topic Review
Heteroaromatic N-Oxides in Asymmetric Catalysis
Chiral heteroaromatic N-oxides can work as powerful electron-pair donors, providing suitable electronic environments in the transition state formed within the reaction. The nucleophilicity of the oxygen atom in N-oxides, coupled with a high affinity of silicon to oxygen, represent ideal properties for the development of synthetic methodology based on nucleophilic activation of organosilicon reagents.
  • 1.5K
  • 28 Apr 2022
Topic Review
Classifications of Adsorptive Ultrafiltration Membrane
Adsorptive ultrafiltration mixed matrix membranes (MMMs) are a new strategy, developed in recent years, to remove harmful cations and small-molecule organics from wastewater and drinking water, which achieve ultrafiltration and adsorption functions in one unit and are considered to be among the promising technologies that have exhibited efficiency and competence in water reuse.
  • 1.5K
  • 17 May 2022
Topic Review
Zn(II) Hydrazone Complexes
Compound Name: (E)-N,N,N-trimethyl-2-oxo-2-(2-(1-(thiazol-2-yl)ethylidene)hydrazinyl)ethan-1-aminium di(thiocyanato-κN) zink(II) dihydrate.
  • 1.5K
  • 29 Dec 2020
Topic Review
Supramolecular Chemistry: Host–Guest Molecular Complexes
The host–guest (HG) interactions in two-dimensional (2D) permeable porous linkages are growing expeditiously due to their future applications in biocatalysis, separation technology, or nanoscale patterning. In host–guest (HG) interaction, distinctive structural complexes development occurs via non-covalent associations. There is a growing curiosity in executing supramolecular HG structures for assembling organic solvents and aqueous solutions on compact planes.
  • 1.5K
  • 09 Jul 2021
Topic Review
Leaves of Diospyros kaki (Persimmon)
Diospyros kaki (persimmon) leaves have long been utilized as traditional medicine for the treatment of ischemic stroke, angina, and hypertension and as a healthy beverage and cosmetic for anti-aging. This study aimed to isolate as many compounds as possible from an ethanol extract of the persimmon leaves to identify the biologically active compounds. The antioxidative effect of the ethyl acetate layer from the ethanol extract of the persimmon leaves was demonstrated by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay and online high-performance liquid chromatography-2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (HPLC-ABTS) analysis. 
  • 1.5K
  • 11 Nov 2021
Topic Review
Tetrasubstituted α-Aminophosphonic Acid Derivatives
Due to their structural similarity with natural α-amino acids, α-aminophosphonic acid derivatives are known biologically active molecules. In view of the relevance of tetrasubstituted carbons in nature and medicine and the strong dependence of the biological activity of chiral molecules into their absolute configuration, the synthesis of α-aminophosphonates bearing tetrasubstituted carbons in an asymmetric fashion has grown in interest in the last decades. In the following lines, the existing literature for the synthesis of optically active tetrasubstituted α-aminophosphonates are summarized, comprising diastereoselective and enantioselective approaches.
  • 1.5K
  • 19 Jun 2021
Topic Review
The Lifetime of Organic Light-Emitting Diodes
Organic light-emitting diodes (OLEDs) have emerged as a promising technology for various applications owing to their advantages, including low-cost fabrication, flexibility, and compatibility. However, a limited lifetime hinders the practical application of OLEDs in electronic devices. OLEDs are prone to degradation effects during operation, resulting in a decrease in device lifetime and performance. 
  • 1.5K
  • 29 Nov 2023
  • Page
  • of
  • 16
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of COVID-19
Encyclopedia of Engineering
Encyclopedia of Social Sciences
Encyclopedia of Digital Society, Industry 5.0 and Smart City
Academic Video Service
Feedback