György Keglevich – författare
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3 produkter
3 produkter
Inbunden, Engelska, 2018
1 895 kr
Skickas inom 5-8 vardagar
Organophosphorus Chemistry presents a groundbreaking resource in this branch of organic chemistry that demonstrates how phosphorus-containing compounds can be manipulated in a variety of organic reactions. The authors give an overview of the newest trends and synthesis strategies, introduce bioactive and environmentally friendly organophosphorus compounds and show their importance in mainstream organic chemistry.
Inbunden, Engelska, 2023
2 239 kr
Skickas inom 5-8 vardagar
Non-conventional synthetic methods may provide new and green methods for the preparation of bioactive heterocycles. These methods, such as microwave and ultrasound assisted synthesis, biocatalysis, photochemistry and electrosynthesis use less energy and may produce less waste to get the desired products when compared to traditional methods. This book explores the use of these methods when synthesizing various biologically relevant heterocyclic scaffolds. THE SERIES: GREEN BIOACTIVE HETEROCYCLES Heterocycles are a widely utilized group of molecules as they often contain bioactivity that is useful in drug development, agriculture, and other applications. However, their synthesis remains challenging with diffi cult to control functional groups. With a greater focus on sustainable synthesis practices, there is a need to develop greener synthetic methods for the synthesis of structurally diverse bioactive heterocyclic scaffolds. This series aims to do so, by collecting developments into common themes.
Häftad, Engelska, 2016
545 kr
Skickas inom 10-15 vardagar
This book looks back on thirty-five years of microwave (MW)chemistry and explains how the application of the MW technique became anintegral part of R&D, eventually becoming recognized in industry. Further,it details how MW chemistry has undergone a dynamic development in the pastthree decades, one driven by the advent of increasingly sophisticatedprofessional MW reactors in place of the kitchen MW ovens used in earlieryears. A major part of the book shows how substitutions, esterifications,amidations, hydrolyses, alkylations, eliminations, dehydrations, condensations,cyclizations, C–C couplings and the modification of heterocycles can beperformed advantageously under MW irradiation, as the reaction times areshorter, while the selectivity and yields are higher; it also explains why inmost cases, the reactions can be performed under solvent-free conditions. MWirradiation within the sphere of organophosphorus chemistry is showcased andtypical reactions, such as the direct derivatization of phosphinic acids,alkylating esterifications, Diels–Alder reactions, the inverse Wittig-typereaction, fragmentations, the Arbuzov reaction, the synthesis ofα-hydroxyphosphonates and α-aminophosphonates (the Kabachnik–Fieldscondensation), deoxygenations and P–C coupling reactions are described under MWconditions. In closing, the advantages of MW chemistry such as faster reactionsand the possibility of simplifying the catalytic systems are addressed.