Applications Of Novel Boron Nitrogen Containing Heterocycles
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Applications Of Novel Boron Nitrogen Containing Heterocycles
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Author : Shih-Yuan Liu
language : en
Publisher:
Release Date : 2003
Applications Of Novel Boron Nitrogen Containing Heterocycles written by Shih-Yuan Liu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
(Cont.) Our studies indicate that unfavorable peri-interactions between the imine substrate and the Lewis acid may be the conformation-controlling element for nucleophilic additions to imines. On the other hand, detailed mechanistic studies of the Mukaiyama aldol reaction suggest a reaction pathway involving an intermediate with a coplanar aldehyde-Lewis acid conformation. These studies demonstrate the broad scope and the high efficiency with which the chiral information is transferred from the planar-chiral Lewis acid to its substrates. Consequently, the turnover step (regeneration of the active Lewis acid) represents the last hurdle to be addressed for achieving asymmetric Lewis acid catalysis. Part III of this thesis describes miscellaneous applications that have been discovered during the course of the development of 1,2-azaborolyl-based planar-chiral Lewis acids. In Chapter 7, we present a surprisingly mild and versatile method for palladium-catalyzed Suzuki cross-couplings of aryl chlorides in the presence of a triarylphosphine. With this catalytic system, both sterically demanding and electronically deactivated aryl chlorides can be efficiently coupled with a range of boronic acids in good yields, and coupling of activated aryl chlorides can be accomplished at room temperature. In Chapter 8, we report the synthesis and characterization of novel 1,2-azaborines and their potential as benzene surrogates.
Novel Methods For Nitrogen Containing Heterocycles And Applications To Total Synthesis
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Author : Patrick Daniel Parker
language : en
Publisher:
Release Date : 2019
Novel Methods For Nitrogen Containing Heterocycles And Applications To Total Synthesis written by Patrick Daniel Parker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Synthesis And Bioactivity Of Novel Boron Containing Heterocycles
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Author : Patrick Thomas Gormley
language : en
Publisher:
Release Date : 2018
Synthesis And Bioactivity Of Novel Boron Containing Heterocycles written by Patrick Thomas Gormley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Anti-infective agents categories.
Progress In Boron Chemistry
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Author : H. Steinberg
language : en
Publisher: Elsevier
Release Date : 2013-09-03
Progress In Boron Chemistry written by H. Steinberg and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-03 with Science categories.
Progress in Boron Chemistry, Volume I is a 10-chapter text that covers the advances in the chemistry of various boron compounds and their applications. The opening chapter deals with the chemistry of compounds containing boron-boron bonds, followed by a brief overview of some aspects of the coordination chemistry of boron. The subsequent chapters discuss the molecular structures of boron hydrides and the chemotherapeutic potential of boron compounds. Other chapters explore the chemistry of other boron compounds, including heteroaromatic boron compounds, organoperoxyboranes, organoboron heterocycles, and boronic acids. The concluding chapter describes the NMR studies of boron compounds. This book is of value to organic, inorganic, and analytical chemists.
The Synthesis Of Novel Nitrogen Containing Heterocycles
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Author : Arife Yazici
language : en
Publisher:
Release Date : 2010
The Synthesis Of Novel Nitrogen Containing Heterocycles written by Arife Yazici and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Alkaloids categories.
Synthesis And Applications Of Novel Nitrogen Heterocycles
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Author : Akop Yepremyan
language : en
Publisher:
Release Date : 2019
Synthesis And Applications Of Novel Nitrogen Heterocycles written by Akop Yepremyan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Heterocyclic compounds categories.
Pyridines and triazines are nitrogen heterocycles found in all fields of the chemical realm. These aromatic compounds readily undergo nucleophilic aromatic substitution reactions. Nitrogen heterocycles appear in therapeutics, reactive dyes, herbicides, catalysts, and others. Exploration of pyridines and triazines in our laboratory, resulted in novel compounds with potential applications. A triazine ligand was developed containing pyrazolone and hydrazine groups, capable of binding to first row transition metals. Copper (II), nickel (II), and zinc (II) formed chelates through a unique 6,5 oxygen to metal binding ring systems. The chelating ability of this ligand led to promising results in its antioxidant ability, and cellular toxicity. (Chapter 1). Homo- and heterodimeric peptide macrocycles were synthesized and characterized. The facile route for the preparation of these compounds enable for rapid and selective transformations of diverse dimeric macrocycles. Analysis via mass spectrometry, NMR spectroscopy, and X-ray diffractometry determined the formation of 24-membered macrocycles. Glycine, and Lphenylalanine amino acid residues were incorporated into the macrocycles as well as substituted hydrazines as amino acid side chain mimics. These compounds find potential applications in a broad field of biological sciences. (Chapter 2). Finally, four members of a class of pyridine containing macrocycles bearing electron withdrawing groups in the 4-position (CN, NO2, Cl, CF3), were synthesized as targets for metal chelation and catalysis. (Chapter 3).
Computational Design And Synthesis Of Boron Nitrogen Containing Heterocycles
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Author : Gabriel J. Lovinger
language : en
Publisher:
Release Date : 2013
Computational Design And Synthesis Of Boron Nitrogen Containing Heterocycles written by Gabriel J. Lovinger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Recent Advancements In The Synthesis Functionalization And Applications Of Nitrogen Containing Heterocycles
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Author : Zachary D. Tucker
language : en
Publisher:
Release Date : 2021
Recent Advancements In The Synthesis Functionalization And Applications Of Nitrogen Containing Heterocycles written by Zachary D. Tucker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
The Synthesis Novel Reactivity And Polymerization Behavior Of Boron And Sulfur Nitrogen Phosphorus Heterocycles
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Author : Andrew Robert McWilliams
language : en
Publisher:
Release Date : 1999
The Synthesis Novel Reactivity And Polymerization Behavior Of Boron And Sulfur Nitrogen Phosphorus Heterocycles written by Andrew Robert McWilliams and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Novel Strategies For The Synthesis Of Nitrogen Containing Heterocycles
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Author : Aaron Keeley
language : en
Publisher:
Release Date : 2015
Novel Strategies For The Synthesis Of Nitrogen Containing Heterocycles written by Aaron Keeley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Heterocyclic compounds categories.