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CHROMENE BASED SPIROCYCLIC MOLECULES AND BIOLOG...
93,90 € *
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"CHROMENE BASED SPIROCYCLIC MOLECULES AND BIOLOGICAL STUDIES" has been divided into three chapters. Chapter I describes diastereoselective synthesis of novel spiro indanone fused pyrano[3,2-c]chromene derivatives following hetero-Diels-Alder reaction and in vitro anticancer studies. Chapter II describes with one-pot, three-component regio- and sterospecific synthesis of spiro indanone pyrrolidine/piperidine fused nitrochromene derivatives through 1,3-dipolar cycloaddition reactions and chapter III describes base mediated green synthesis of enantiopure 2-C-spiro-glycosyl-3-nitrochromenes.

Anbieter: Dodax
Stand: 18.09.2020
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Mechanistic Studies on Iridium Catalyzed Allyli...
54,90 € *
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High regio- and stereocontrol will always be an essential part of developing useful reactions. A reaction that has a perfect regio- and stereocontrol is less likely to require extensive purification to obtain the product in high levels of purity. Existing reactions can be optimized in terms of selectivity by studying the factors that influence the selectivity. Thus, mechanistic studies on the origins of regio- and enantioselectivity are an integral part of developing useful reactions.

Anbieter: Dodax
Stand: 18.09.2020
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Synthetic Studies on N-aryl-gamma-lactams
68,00 € *
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Due to growing number of bacterial strains acquiring resistance to the current arsenal of chemotherapeutic drugs, the search for novel anti bacterial agents continue to be a major area of research in many fronts.During the last decade,various groups have directed their efforts to synthesize various bioactive gamma-lactams. Modification of lactam ring has been playing a vital role in determining the bio-activities of these derivatives and so exploration of a novel methodology in a simple way is a pivotal focal point of research activity in bioorganic chemistry. Progress in the art of organic synthesis in the last decades has been achieved by marked advances in chemo-,regio-and stereoselective functional group transformations by using classical and newly developed reagents. The book entitled "Synthetic Studies on N-aryl- gamma-lactams" is an embodiment of research aimed at developing simple methodologies for selective functional group transformations of N-aryl- gamma-lactams and an effort towards the development of new synthetic strategies for conversion of N-aryl- gamma-lactams to substituted pyrrole and pyrroloquinoline derivatives.

Anbieter: Dodax
Stand: 18.09.2020
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Synthetic pathway and process engineering for t...
49,80 € *
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Biocatalysis shows high potential for the functionalization of unactivated C-H bonds at ambient conditions with absolute chemo-, regio-, and stereoselectivities being unrivalled by any chemical approach. In order to efficiently exploit nature’s toolbox towards an industrial implementation, engineering targets on the reaction as well as the catalyst level need to be identified and tackled in a concerted way.In this thesis, recombinant microbial cells containing the alkane monooxygenase AlkBGT from Pseudomonas putida GPo1 were applied for the w-functionalization of renewable fatty acid methyl esters (FAMEs). The resulting bifunctional products serve as building blocks for polymer syntheses. AlkBGT-containing Escherichia coli were shown to convert FAMEs with 5 to 12 carbon atoms in the alkyl chain giving the highest oxyfunctionalization activities (104 U gCDW -1 ) for nonanoic acid methyl ester. Kinetic studies revealed that AlkBGT catalyzes a three-step oxidation, yielding ?-alcohols, aldehydes and acids as products. In order to achieve ?-amino-functionalization, AlkBGT-based aldehyde formation was successfully coupled in recombinant E. coli with ?-transaminase catalysis (CV2025 from Chromobacterium violaceum), enabling the conversion of dodecanoic acid methyl ester (DAME) to 12-aminododecanoic acid methyl ester. Substrate uptake was identified as key factor limiting the conversion of the large and hydrophobic substrate DAME (1.4 U gCDW -1, 0.1 g L -1 h -1 ). Co-expression of the gene encoding the outer membrane protein AlkL relieved the uptake limitation and boosted the activities 62-fold to 87 U gCDW -1 allowing productivities of 4-8 g L -1 h -1 in two-liquid phase biotransformations. Furthermore, the latter reaction engineering concept enabled to control and govern product formation during AlkBGT-based multistep whole-cell biocatalysis. Overoxidation was prevented providing excess of substrate, yielding ?-alcohol as predominant product (up to 52 mM), whereas pronounced substrate limitation using bis(2-ethylhexyl)phthalate as organic carrier solvent resulted in almost exclusive acid accumulation (up to 93 mM). Introduction of the NAD(P)H-independent alcohol dehydrogenase AlkJ, which was shown to catalyze irreversible alcohol oxidation, into E. coli containing AlkBGT and AlkL enabled a shift towards the formation of overoxidized compounds in two-liquid phase biotransformations of DAME. This allowed the formation of the aldehyde as predominant product (up to 20 mM).Via catalyst and reaction engineering, this study sets the stage for the industrial implementation of recombinant microbial cells for terminal FAME functionalizations.

Anbieter: Dodax
Stand: 18.09.2020
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Diletta Rizzo Marin
29,00 € *
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Diletta Rizzo Marin (born 14 February 1984, Vicenza) is an Italian operatic soprano admired for the quality of her voice and her skills in acting. She has appeared frequently at the Festival Internacional de Santander. Diletta Rizzo Marin was born into a family of musicians. Her father, Roberto Scandiuzzi, is a prominent Italian bass. Her mother, Anna Maria Bicciato, is a soprano and voice teacher. She received her diploma in piano at the age of 16 and began her vocal studies under Bicciato. She has also completed a laurea in theatrical performance from L'Università Ca' Foscari in Venice. Her official debut was in July 2004 in a solo recital at the 53rd Festival Internacional de Santander. She returned to the Festival again in 2005 appearing in a concert with Roberto Scandiuzzi, the Coral Salvé de Laredo, and the Orchestra 900 del Teatro Regio di Torino.

Anbieter: Dodax
Stand: 18.09.2020
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The Political Economy of Wasta: Use and Abuse o...
117,69 € *
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The term ' wasta stems from the Arabic root for 'middle' or 'medium ' and describes the phenomenon of using 'connections' to find job, government services or other favors to circumvent bureaucracy or bypass the system as a whole. The effects of ' wasta' may be both positive or negative, and is not a phenomenon that is particular to the Arab or Muslim world, but also to many other cultures and regions of the world, with similar concepts popularly known as ubuntu, guanxi, harambee, naoberschop, or "old boy network" used in African, Chinese and European societies.By its very nature ' wasta' is an area of grey or even black information, and, like corruption to which it is most often associated, is hard to assess although country corruption perception indexes attempt to provide a quantifiable basis. In the final analysis such ratings are based on perceptions of corruption, and this perception may vary strongly depending on different societal structures and cultural modes, whether these are extended family systems, tribal, clans or more atomized societies where relationships are essentially transactional and rule based. In a western perspective where 'wasta' may be considered as a form of corruption, in other societies it may be perceived as something 'natural' and not criminal, and using one's 'wasta' in tribal societies to help clan members is seen as a duty. The difference stems from the 'innocent ' use of 'wasta' to make introductions, as opposed to its abuse in placing unqualified persons in positions .The volume brings together academics and professional experts to examine a range of multi-faceted social, economic and political issues raised by the use and abuse of social networking, covering various topics like: 'wasta' interpersonal connections in family and business ties, The relationship between inequality-adjusted human development and corruption perception indexes in the Gulf regio n, 'wasta' and business networking, assessing the economic cost of 'wasta', 'wasta' and its impact on quality oriented education reform and the perceptions of young people, The use of 'wasta' to overcome socio-cultural barriers for women and men The volume also offers insights into social relations and ethics, and how the use of ' wasta' contradicts with common held religious principles, along with some country studies on Islamic principles and the use of 'wasta' .Mohamed Ramad y is a Visiting Associate Professor, King Fahd University of Petroleum and Minerals, Saudi Arabia.

Anbieter: Dodax
Stand: 18.09.2020
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Innovative Catalysis in Organic Synthesis
189,00 CHF *
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C-H, C-O, C-C, and C-Heteroatom bond forming processes by using metal-ligand approaches for the synthesis of organic compounds of biological, pharmacological and organic nanotechnological utility are the key areas addressed in this book. Authored by a European team of leaders in the field, it brings together innovative approaches for a variety of catalysis reactions and processes frequently applied in organic synthesis into a handy reference work. It covers all major types of catalysis, including homogeneous, heterogeneous, and organocatalysis, as well as mechanistic and computational studies. Special attention is paid to the improvements in efficiency and sustainability of important catalytic processes, such as selective oxidations, hydrogenation, and cross-coupling reactions, and to their utilization in industry. The result is a valuable resource for advanced researchers in both academia and industry, as well as graduate students in organic chemistry aiming for chemo-, regio- or stereoselective synthesis of organic compounds by using novel catalytic systems.

Anbieter: Orell Fuessli CH
Stand: 18.09.2020
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Innovative Catalysis in Organic Synthesis
170,00 CHF *
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C-H, C-O, C-C, and C-Heteroatom bond forming processes by using metal-ligand approaches for the synthesis of organic compounds of biological, pharmacological and organic nanotechnological utility are the key areas addressed in this book. Authored by a European team of leaders in the field, it brings together innovative approaches for a variety of catalysis reactions and processes frequently applied in organic synthesis into a handy reference work. It covers all major types of catalysis, including homogeneous, heterogeneous, and organocatalysis, as well as mechanistic and computational studies. Special attention is paid to the improvements in efficiency and sustainability of important catalytic processes, such as selective oxidations, hydrogenation, and cross-coupling reactions, and to their utilization in industry. The result is a valuable resource for advanced researchers in both academia and industry, as well as graduate students in organic chemistry aiming for chemo-, regio- or stereoselective synthesis of organic compounds by using novel catalytic systems.

Anbieter: Orell Fuessli CH
Stand: 18.09.2020
Zum Angebot
Innovative Catalysis in Organic Synthesis
170,00 CHF *
ggf. zzgl. Versand

C-H, C-O, C-C, and C-Heteroatom bond forming processes by using metal-ligand approaches for the synthesis of organic compounds of biological, pharmacological and organic nanotechnological utility are the key areas addressed in this book. Authored by a European team of leaders in the field, it brings together innovative approaches for a variety of catalysis reactions and processes frequently applied in organic synthesis into a handy reference work. It covers all major types of catalysis, including homogeneous, heterogeneous, and organocatalysis, as well as mechanistic and computational studies. Special attention is paid to the improvements in efficiency and sustainability of important catalytic processes, such as selective oxidations, hydrogenation, and cross-coupling reactions, and to their utilization in industry. The result is a valuable resource for advanced researchers in both academia and industry, as well as graduate students in organic chemistry aiming for chemo-, regio- or stereoselective synthesis of organic compounds by using novel catalytic systems.

Anbieter: Orell Fuessli CH
Stand: 18.09.2020
Zum Angebot