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Cycloaddition Reactions Using Greener Technique...
71,90 € *
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The Book entitled "Cycloaddition Reactions Using Greener Techniques and Applications" reports newly synthesized N-methyl & N-phenyl- -chloro nitrones from chlorohydrin and their cycloaddition reactions with different olefins, alkynes leading to the formation of regio and stereoselective cycloadducts following green chemistry methodologies. The book also reports about the synthesis of -chloro nitrone synthesized from dry distilled chloral and cycloaddition reactions leading to the formation of regio and stereoselective cycloadducts. Majority of the reactions have been carried out in water and under microwave irradiation. High yield of cycloadducts (both isoxazolidine and isoxazoline derivatives) have been reported compared with the reactions performed in conventional solvents and thereby applications of green chemistry methodology of nirone-cycloaddition reactions have been achieved. N-methyl & N-phenyl- -chloro nitrones have been also used successfully as potential oxidizing reagents for the synthesis of aldehyde and ketones with unexpected high yields and the side products of the reaction are also used as new dipolarophiles in the synthesis of spiro cycloadducts.

Anbieter: Dodax
Stand: 19.01.2020
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Cycloaddition Reactions Using Greener Technique...
74,00 € *
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The Book entitled "Cycloaddition Reactions Using Greener Techniques and Applications" reports newly synthesized N-methyl & N-phenyl- -chloro nitrones from chlorohydrin and their cycloaddition reactions with different olefins, alkynes leading to the formation of regio and stereoselective cycloadducts following green chemistry methodologies. The book also reports about the synthesis of -chloro nitrone synthesized from dry distilled chloral and cycloaddition reactions leading to the formation of regio and stereoselective cycloadducts. Majority of the reactions have been carried out in water and under microwave irradiation. High yield of cycloadducts (both isoxazolidine and isoxazoline derivatives) have been reported compared with the reactions performed in conventional solvents and thereby applications of green chemistry methodology of nirone-cycloaddition reactions have been achieved. N-methyl & N-phenyl- -chloro nitrones have been also used successfully as potential oxidizing reagents for the synthesis of aldehyde and ketones with unexpected high yields and the side products of the reaction are also used as new dipolarophiles in the synthesis of spiro cycloadducts.

Anbieter: Dodax AT
Stand: 19.01.2020
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2-aroyl-3-arylaziridines, synthesis and reactions
39,90 € *
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The first part of the present review is devoted to the synthesis of 2-aroyl-3-aryl aziridines. Scientists are interested in these classes of heterocyclic compounds, first of all by their photochromic properties and high sensitivity towards UV-VIS irradiation. In addition, these compounds are interesting from the viewpoint of reactivity, chemo- and regio-selectivity, stereochemistry and many other. The last part is concerned with chemical behavior of 2-aroyl-3-aryl aziridines in numerous organic reactions including photochemical transformations, cycloadditions, rearrangements, regio- and stereo-selectivity, 1,3-diolar reaction, ring expansion, ring opening, deamination and other.

Anbieter: Dodax
Stand: 19.01.2020
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2-aroyl-3-arylaziridines, synthesis and reactions
41,10 € *
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The first part of the present review is devoted to the synthesis of 2-aroyl-3-aryl aziridines. Scientists are interested in these classes of heterocyclic compounds, first of all by their photochromic properties and high sensitivity towards UV-VIS irradiation. In addition, these compounds are interesting from the viewpoint of reactivity, chemo- and regio-selectivity, stereochemistry and many other. The last part is concerned with chemical behavior of 2-aroyl-3-aryl aziridines in numerous organic reactions including photochemical transformations, cycloadditions, rearrangements, regio- and stereo-selectivity, 1,3-diolar reaction, ring expansion, ring opening, deamination and other.

Anbieter: Dodax AT
Stand: 19.01.2020
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Isoxazolidine derivatives
49,90 € *
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Based on the regio and stereoselectivity of 1,3-dipolar cycloaddition reactions of nitrones to alkenes the book has focus on - regio and stereoselectivity synthesis of N-nucleosides by 1,3-dipolar cycloaddition of sugar-derived nitrones with N-arylmaleimides. - 1,3-Dipolar cycloaddition of N-ribosylnitrones and N-arylmalaimides affords anti-isoxazolidine. - A series of novel nitrones were prepared and isolated in a pure state, and they cycloadded to some allyl derivatives to give isoxazolidine derivatives and studied the stereoselectivity of their cycloaddition reactions. - Lewis acid (MgBr2.Et2O) was applied as a catalyst for 1,3-dipolar cycloaddition reactions and it highly effect the rate of cycloaddition reaction. - we studied also the biological activity of nitrone and isoxazolidine compounds.

Anbieter: Dodax
Stand: 19.01.2020
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Isoxazolidine derivatives
51,30 € *
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Based on the regio and stereoselectivity of 1,3-dipolar cycloaddition reactions of nitrones to alkenes the book has focus on - regio and stereoselectivity synthesis of N-nucleosides by 1,3-dipolar cycloaddition of sugar-derived nitrones with N-arylmaleimides. - 1,3-Dipolar cycloaddition of N-ribosylnitrones and N-arylmalaimides affords anti-isoxazolidine. - A series of novel nitrones were prepared and isolated in a pure state, and they cycloadded to some allyl derivatives to give isoxazolidine derivatives and studied the stereoselectivity of their cycloaddition reactions. - Lewis acid (MgBr2.Et2O) was applied as a catalyst for 1,3-dipolar cycloaddition reactions and it highly effect the rate of cycloaddition reaction. - we studied also the biological activity of nitrone and isoxazolidine compounds.

Anbieter: Dodax AT
Stand: 19.01.2020
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A Brief Overview on the Synthesis of Heterocycl...
32,90 € *
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Palladium-mediated cyclization reaction has been recognized as one of the simplest and useful tool for the regio- as well as stereoselective synthesis of carbo- and heterocyclic compounds. In the multi-step synthesis of natural products Palladium-mediated C-H activation reaction is frequently used as one of the most important steps. Further heterocyclic moieties are present in natural products, pharmaceuticals, organic materials, and numerous functional molecules. Therefore, synthetic organic chemists are interested in developing new versatile and efficient syntheses of heterocycles. This book contains brief overview in the construction of heterocyclic rings in various ways under palladium-catalyzed C-H activation.

Anbieter: Dodax
Stand: 19.01.2020
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A Brief Overview on the Synthesis of Heterocycl...
33,90 € *
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Palladium-mediated cyclization reaction has been recognized as one of the simplest and useful tool for the regio- as well as stereoselective synthesis of carbo- and heterocyclic compounds. In the multi-step synthesis of natural products Palladium-mediated C-H activation reaction is frequently used as one of the most important steps. Further heterocyclic moieties are present in natural products, pharmaceuticals, organic materials, and numerous functional molecules. Therefore, synthetic organic chemists are interested in developing new versatile and efficient syntheses of heterocycles. This book contains brief overview in the construction of heterocyclic rings in various ways under palladium-catalyzed C-H activation.

Anbieter: Dodax AT
Stand: 19.01.2020
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Homogeneous Catalysis & Main Group Reactivity: ...
82,90 € *
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The first part of this book describes the detailed mechanism of ruthenium catalyzed nucleophilic addition to terminal alkynes with the aim of understanding the key factors controlling the regio- and stereoselectivity of product formation. These types of reactions provide excellent methodologies for the synthesis of enamides and enol-esters. The main challenge of this method arises due to formation of product mixture, Markovnikov and anti-Markovnikov E- or Z- products. Control of regio- and stereoselectivity by modulating the electronic and steric environment along with solvent effect is nicely discussed in this part. The second part deals with the metal free asymmetric transformations and remarkable chemistry of main group radical species. This part also offers the reader to learn how to use modern theoretical techniques to predict the reactivity and product selectivity in terms of ground electronic structure and bonding parameters.

Anbieter: Dodax
Stand: 19.01.2020
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