Angebote zu "Organic" (20 Treffer)

Kategorien

Shops

2-aroyl-3-arylaziridines, synthesis and reactions
41,10 € *
ggf. zzgl. Versand

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
Zum Angebot
A Brief Overview on the Synthesis of Heterocycl...
32,90 € *
ggf. zzgl. Versand

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
Zum Angebot
A Brief Overview on the Synthesis of Heterocycl...
33,90 € *
ggf. zzgl. Versand

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
Zum Angebot
Organocatalytic Cycloadditions for Synthesis of...
127,48 € *
ggf. zzgl. Versand

A comprehensive resource to the development and recent progress of zwitterion-oriented cycloadditions promoted by organoamines, organophosphines, N-heterocyclic carbenes Organocatalytic Cycloadditions for Synthesis of Carbo- and Heterocycles offers a clear explanation to the development of and the information on the latest research pertaining to zwitterion-oriented cycloadditions promoted by organoamines, organophosphines, N-heterocyclic carbenes. The authors?noted experts in the field?include a comprehensive review to the investigations of the reaction mechanisms and explore the synthesis of different products from the same starting materials.Filled with illustrative examples and designed to be accessible, the text shows how to control the chemo-, regio- and stereoselectivity and explains the further design of novel cycloaddition reactions catalyzed by organoamines and organophosphines based on zwitterion-oriented synthetic strategy. This important text:?Explains why the formation of carbo- and heterocycles is a key transformation in organic synthesis.?Offers a clear description to the development of zwitterion-oriented cycloadditions promoted by organoamines, organophosphines, N-heterocyclic carbenes, and explores the latest research ?Contains the most current examples involving synthetic transformations of organocatalytic cycloadducts?Includes contributions from noted experts in the field of organic synthesisWritten for organic chemists, pharmaceutical chemists, chemists in industry, graduates, and librarians, Organocatalytic Cycloadditions for Synthesis of Carbo- and Heterocyclesis is the essential guide to the topic.

Anbieter: Dodax AT
Stand: 19.01.2020
Zum Angebot
Organocatalytic Cycloadditions for Synthesis of...
127,48 € *
ggf. zzgl. Versand

A comprehensive resource to the development and recent progress of zwitterion-oriented cycloadditions promoted by organoamines, organophosphines, N-heterocyclic carbenes Organocatalytic Cycloadditions for Synthesis of Carbo- and Heterocycles offers a clear explanation to the development of and the information on the latest research pertaining to zwitterion-oriented cycloadditions promoted by organoamines, organophosphines, N-heterocyclic carbenes. The authors?noted experts in the field?include a comprehensive review to the investigations of the reaction mechanisms and explore the synthesis of different products from the same starting materials.Filled with illustrative examples and designed to be accessible, the text shows how to control the chemo-, regio- and stereoselectivity and explains the further design of novel cycloaddition reactions catalyzed by organoamines and organophosphines based on zwitterion-oriented synthetic strategy. This important text:?Explains why the formation of carbo- and heterocycles is a key transformation in organic synthesis.?Offers a clear description to the development of zwitterion-oriented cycloadditions promoted by organoamines, organophosphines, N-heterocyclic carbenes, and explores the latest research ?Contains the most current examples involving synthetic transformations of organocatalytic cycloadducts?Includes contributions from noted experts in the field of organic synthesisWritten for organic chemists, pharmaceutical chemists, chemists in industry, graduates, and librarians, Organocatalytic Cycloadditions for Synthesis of Carbo- and Heterocyclesis is the essential guide to the topic.

Anbieter: Dodax
Stand: 19.01.2020
Zum Angebot
The Enzymes in Synthesis of Chiral Bioactive Co...
59,90 € *
ggf. zzgl. Versand

The administration of chiral compounds in an enantiomerically pure form, instead of racemic mixtures, become an important issue especially in the pharmaceutical and agrochemical industries due to the well established correlation between the biological activity and stereochemistry. Pure enantiomers could be formed by the asymmetric synthesis and /or the resolution of racemates. This could be achieved by the use of enzymes as chiral catalysts. The advantages of enzymes are their high stereo- (chiral), regio- (positional) and chemo- (functional group specific) selectivity. This selectivity offers several benefits like high catalytic efficiency, preservation of asymmetric centres, single step transformations, easier separation, mild operating conditions and fewer environmental problems. The organic reactions that are catalyzed by enzymes to give chiral bioactive organic compounds include, for example, reduction (e.g. by dehydrogenases, ketoreductases), oxidation (e.g. by monooxygenases, dioxygenases), hydrolytic (e.g. by lipases, esterases) reactions.

Anbieter: Dodax
Stand: 19.01.2020
Zum Angebot
The Enzymes in Synthesis of Chiral Bioactive Co...
61,60 € *
ggf. zzgl. Versand

The administration of chiral compounds in an enantiomerically pure form, instead of racemic mixtures, become an important issue especially in the pharmaceutical and agrochemical industries due to the well established correlation between the biological activity and stereochemistry. Pure enantiomers could be formed by the asymmetric synthesis and /or the resolution of racemates. This could be achieved by the use of enzymes as chiral catalysts. The advantages of enzymes are their high stereo- (chiral), regio- (positional) and chemo- (functional group specific) selectivity. This selectivity offers several benefits like high catalytic efficiency, preservation of asymmetric centres, single step transformations, easier separation, mild operating conditions and fewer environmental problems. The organic reactions that are catalyzed by enzymes to give chiral bioactive organic compounds include, for example, reduction (e.g. by dehydrogenases, ketoreductases), oxidation (e.g. by monooxygenases, dioxygenases), hydrolytic (e.g. by lipases, esterases) reactions.

Anbieter: Dodax AT
Stand: 19.01.2020
Zum Angebot
In vitro studies of a new lipase of Bacillus
79,00 € *
ggf. zzgl. Versand

Lipases (E.C.3.1.1.3) of bacterial origin have been extensively screened and characterized due to their multifold advantages i.e. easy availability, bulk production, thermal stability, optimal performance in organic synthesis and amenability to molecular/ meta-genomic approaches.Lipases are indispensable for the bioconservation of lipids (triacylglycerol). They catalyze both the hydrolysis as well as synthesis of esters formed from glycerol and long chain fatty acids . These reactions usually proceed with higher regio- and/ or enantio-selectivity, thus making lipase an important biocatalyst in organic chemistryThis book will provide an insight into recent advancements and comparative account of novel lipase of Bacillus coagulans . The present book is divided into five chapters and each chapter describes production,purification, characterisation, immobilizations and its potential applications in detail. this book has been written for postgraduate biotechnology students and mainly for researcher working in the field of enzymes in general and Bacillus coagulans in specific.

Anbieter: Dodax
Stand: 19.01.2020
Zum Angebot
In vitro studies of a new lipase of Bacillus
81,30 € *
ggf. zzgl. Versand

Lipases (E.C.3.1.1.3) of bacterial origin have been extensively screened and characterized due to their multifold advantages i.e. easy availability, bulk production, thermal stability, optimal performance in organic synthesis and amenability to molecular/ meta-genomic approaches.Lipases are indispensable for the bioconservation of lipids (triacylglycerol). They catalyze both the hydrolysis as well as synthesis of esters formed from glycerol and long chain fatty acids . These reactions usually proceed with higher regio- and/ or enantio-selectivity, thus making lipase an important biocatalyst in organic chemistryThis book will provide an insight into recent advancements and comparative account of novel lipase of Bacillus coagulans . The present book is divided into five chapters and each chapter describes production,purification, characterisation, immobilizations and its potential applications in detail. this book has been written for postgraduate biotechnology students and mainly for researcher working in the field of enzymes in general and Bacillus coagulans in specific.

Anbieter: Dodax AT
Stand: 19.01.2020
Zum Angebot