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Hydrogen Bonding in Organic Synthesis

2009-09-09 Science
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Release : 2009-09-09
Genre : Science
Kind : eBook
Book Rating : 855/5 ( reviews)

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Book Synopsis Hydrogen Bonding in Organic Synthesis by : Petri M. Pihko

Download or read book Hydrogen Bonding in Organic Synthesis written by Petri M. Pihko. This book was released on 2009-09-09. Available in PDF, EPUB and Kindle. Book excerpt: This first comprehensive overview of the rapidly growing field emphasizes the use of hydrogen bonding as a tool for organic synthesis, especially catalysis. As such, it covers such topics as enzyme chemistry, organocatalysis and total synthesis, all unified by the unique advantages of hydrogen bonding in the construction of complex molecules from simple precursors. Providing everything you need to know, this is a definite must for every synthetic chemist in academia and industry.

Non-Covalent Catalysis and Hydrogen Bonding

2019-08-08 Science
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Release : 2019-08-08
Genre : Science
Kind : eBook
Book Rating : 702/5 ( reviews)

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Book Synopsis Non-Covalent Catalysis and Hydrogen Bonding by :

Download or read book Non-Covalent Catalysis and Hydrogen Bonding written by . This book was released on 2019-08-08. Available in PDF, EPUB and Kindle. Book excerpt: Research Paper (undergraduate) from the year 2019 in the subject Chemistry - Bio-chemistry, grade: 1,0, University of Cologne, language: English, abstract: This work is about the non-covalent catalysis and concentrates on the hydrogen-bond catalysis. Nowadays it is common to use catalysis in organic synthesis. It can help in orienting the substrates, lowering barriers to reaction and accelerating the rates of reaction. In addition to metal-ligand systems and biocatalysts, there is another class of catalysts, the organocatalysts which are free of any metals, like many enzymes. The organocatalysts often consist of chiral compounds. The output materials are easy to find in the nature. How these catalysts accelerate the reaction rates is a central question in organic synthesis. It is important to distinguish the interactions with the organic substrates between covalent and non-covalent bonds. The activation of a carbonyl compound by conversion into an enamine or into an iminium ion belongs to the covalent catalysis, while to increase the electrophilicity of a carbonyl group by formation of hydrogen bondings is a typical example for non-covalent organocatalysis. Thus, the acceleration and the control of the reaction rates depend on formation of hydrogen bonds for non-covalent organocatalysis. It is possible to catalyse two hydrogen bonds which occur in dual hydrogen bonding donors.

Strong Hydrogen Bonding in Organic Synthesis

2009
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Release : 2009
Genre :
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Strong Hydrogen Bonding in Organic Synthesis by : Kwok-Hung So

Download or read book Strong Hydrogen Bonding in Organic Synthesis written by Kwok-Hung So. This book was released on 2009. Available in PDF, EPUB and Kindle. Book excerpt:

Hydrogen-bonded Capsules: Molecular Behavior In Small Spaces

2015-09-23 Science
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Release : 2015-09-23
Genre : Science
Kind : eBook
Book Rating : 376/5 ( reviews)

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Book Synopsis Hydrogen-bonded Capsules: Molecular Behavior In Small Spaces by : Julius Rebek, Jr

Download or read book Hydrogen-bonded Capsules: Molecular Behavior In Small Spaces written by Julius Rebek, Jr. This book was released on 2015-09-23. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes the behavior of molecules confined to small spaces. The small spaces are created by the self-assembly of modules into hollow capsular structures through hydrogen bonding; capsules assembled by metal/ligand binding or other forces are not included. Topics discussed include how assembly of capsules occurs, how molecules get in and out of the capsules, new spatial arrangements (stereochemistry) created in the capsules, and the altered shapes, interactions and reactivities of molecules held inside the small spaces. The descriptions emphasize molecular recognition phenomena and the perspective is that of physical organic chemistry.The book is the first monograph to treat reversible molecular encapsulation. More than 20 university and institute groups worldwide engage in this research, which represents the leading edge of activity in molecular recognition and the physical organic chemistry of confined molecules.

The Weak Hydrogen Bond

2001 Hydrogen bonding
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Release : 2001
Genre : Hydrogen bonding
Kind : eBook
Book Rating : 707/5 ( reviews)

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Book Synopsis The Weak Hydrogen Bond by : Gautam R. Desiraju

Download or read book The Weak Hydrogen Bond written by Gautam R. Desiraju. This book was released on 2001. Available in PDF, EPUB and Kindle. Book excerpt: The weak or non-conventional hydrogen bond has been subject of intense scrutiny over recent years in several fields, in particular in structural chemistry, structural biology, and also in the pharmaceutical sciences. There is today a large body of experimental and theoretical evidenceconfirming that hydrogen bonds like C-H...O, N-H...pi, C-H...pi and even bonds like O-H...metal play distinctive roles in molecular recognition, guiding molecular association, and in determining molecular and supramolecular architectures. The relevant compound classes include organometalliccomplexes, organic and bio-organic systems, and also DNA and proteins. The book provides a comprehensive assessment of this interaction type, and is of interest to all those interested in structural and supramolecular science, including fields as crystal engineering and drug design.

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