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Topic review
Updated time: 25 Nov 2020
Submitted by: Aparna Das
Definition: Ascorbic acid is the most well-known vitamin found in different types of food. It has tremendous medical applications in several different fields such as in pharmaceuticals, cosmetics, and in organic synthesis. Ascorbic acid can be used as a substrate or mediator in organic synthesis. In this review, we report ascorbic acid-catalyzed reactions in organic synthesis. Several examples are included in this review to demonstrate that ascorbic acid is a versatile catalyst for the synthesis of diverse organic compounds. Reactions catalyzed by ascorbic acid are performed in organic or aqueous media. The readily available and easy handling features of ascorbic acid make these procedures highly fascinating.
Entry Collection : Organic Synthesis
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Topic review
Updated time: 25 Nov 2020
Submitted by: Aparna Das
Definition: Ascorbic acid is a vitamin found in different types of food. It has tremendous medical applications in several different fields such as in pharmaceuticals, cosmetics, and in organic synthesis.
Entry Collection : Organic Synthesis
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Topic review
Updated time: 18 Mar 2021
Submitted by: Xavier Salom-Roig
Definition: Aurilides are a class of depsipeptides occurring mainly in marine cyanobacteria. Members of the aurilide family have shown to exhibit strong cytotoxicity against various cancer cell lines. These compounds bear a pentapeptide, a polyketide, and an α-hydroxy ester subunit in their structure.
Entry Collection : Organic Synthesis
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Topic review
Updated time: 28 Oct 2020
Submitted by: Bimal Banik
Definition: Discovery and synthesis of penicillin and other beta-lactam antibiotics have received sustained attention. The use of β-lactam antibiotics is extensively documented in several thousand of publications. In modern times, microwave-induced reactions are also used extensively for the synthesis and stereochemical studies of diverse β-lactams. In this paper, the author describes a few crucial reactions that are performed toward the synthesis of β-lactams and products obtained from them under classical conditions as well as by domestic or automated microwave oven.
Entry Collection : Organic Synthesis
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Topic review
Updated time: 19 Feb 2021
Submitted by: Rashid Amin
Definition: Biopolymers have attained enormous attention with perspective multi-functional and high-performance biocomposites having a low environmental impact with unique properties like, abundantly available, renewable, eco-friendly, and light-weight. Biopolymeric composites should substitute synthetic materials in optics, bio-chemistry, and biomedical engineering with versatile applications, and investment and research on these materials increase significantly. Biopolymers and biodegradable synthetic polymers have attracted researchers’ enormous attention in recent years .
Entry Collection : Organic Synthesis
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Topic review
Updated time: 16 Dec 2020
Submitted by: ANNA RASPOLLI
Definition: Alkyl levulinates (ALs) represent outstanding bio-fuels and strategic bio-products within the context of the marketing of levulinic acid derivatives. In order to promote the market for these bio-products and, concurrently, the immediate development of new applications, it is necessary to speed up the intensification of their production processes. In this regard, today, it is possible to achieve this important issue only by using low-cost or, even better, waste biomasses, as starting feedstocks. Thus, the transition to the real biomass now represents a necessary choice for allowing the next ALs production on a larger scale. The improvement of the available synthetic strategies, the use of raw materials and the development of new applications for ALs can contribute to develop more intensified, greener and sustainable processes.
Entry Collection : Organic Synthesis
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Topic review
Updated time: 09 Oct 2020
Submitted by: Tang Xin Ting
Definition: Azo-functionalized materials are one of the appealing groups of the functionalized materials owing to their photoswitching behaviour and have been explored for various potential applications viz., optical data storage, sensor, display devices, nonlinear materials and molecular switches. Recently, azo-functionalized bent-core liquid crystals (BCLCs) have gained significant attention because they have dual properties of BCLCs and azobenzene, which enables to generate new multifaceted functional and smart materials. In this report, the recently synthesized azobenzene containing bent-core mesogens and its subclass, the so-called hockey stick and V-shaped molecules are summarized. The mesomorphic behaviour of reported BCLCs affected by the type of central core unit, the nature, number and position of the lateral substituents and the type and length of the terminal chain are discussed. The photoisomerization process of these photoresponsive BCLCs in solid, solution and mesophase, as well as the impact of light on the chemical and electrical properties of them, are discussed.
Entry Collection : Organic Synthesis
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Topic review
Updated time: 14 Oct 2020
Submitted by: KATIA CAILLIAU MAGGIO
Definition: Organometallics, such as copper compounds, are cancer chemotherapeutics used alone or in combination with other drugs. A group of copper complexes exerts an effective inhibitory action on topoisomerases, which participate in the regulation of DNA topology. Copper complexes of topoisomerase inhibitors work by different molecular mechanisms that have repercussions on the cell cycle checkpoints and death effectors.
Entry Collection : Organic Synthesis
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Topic review
Updated time: 05 Apr 2021
Submitted by: Eslam El-Sawy
Definition: Coumarins are a family of benzopyrones (1,2-benzopyrones or 2H-[1]benzopyran-2-ones), which represent an important family of oxygen-containing heterocycles, widely distributed in nature. Since coumarins have versatile applications, the synthesis trials of different structures of the coumarin-based scaffold were attempted. Among all the heterocycles built on α-pyrone moiety of coumarin, the furan ring was the only available structure in nature. Thus, it has inspired a lot of researchers to replace the oxygen with other heteroatoms.Wide varieties of heterocycles were constructed by a synthetic pathway to introduced furans, pyrroles, thiophenes, and selenophenes as a fused ring that characterized by a single heteroatom to the α-pyrone moiety of coumarin.
Entry Collection : Organic Synthesis
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Topic review
Updated time: 25 Jan 2021
Definition: Hydatid cyst or cystic echinococcosis (CE) is well-known as one of the most common universal parasitic infections, which infects a wide range of hosts such as humans, wild animals, and domestic livestock. Therefore, CE can be considered as an important challenge both from medical and economic points of view.
Entry Collection : Organic Synthesis
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