Trimethylenemethane Cycloadditions in Perhydroazulene Construction PDF Download
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Author: Roberto Iyeo Higuchi
Publisher:
ISBN:
Category :
Languages : en
Pages : 480
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Book Description
Author: Roberto Iyeo Higuchi
Publisher:
ISBN:
Category :
Languages : en
Pages : 480
Get Book Here
Book Description
Author: Roberto Iyeo Higuchi
Publisher:
ISBN:
Category :
Languages : en
Pages : 494
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 780
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Book Description
Author: Ronald Michael Painter
Publisher: Stanford University
ISBN:
Category :
Languages : en
Pages : 110
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Book Description
The chemoselective oxidation of vicinal diols to α-hydroxyketones is a challenge in organic syntheses because not only does the diol need to be oxidized selectively to a monocarbonyl compound, but diols are also prone to overoxidation and oxidative cleavage. Employing a cationic palladium complex, [(neocuproine)Pd(OAc)]2(OTf)2, we were able to demonstrate the selective oxidation of glycerol to dihydroxyacetone mediated by either benzoquinone or O2 as the terminal oxidant, an accomplishment that has little precedent in homogeneous catalysis. Mechanistic studies were undertaken to uncover the nature of this remarkable chemoselectivity. Kinetic and deuterium-labeling studies implicate reversible β-hydride elimination from isomeric Pd alkoxides and turnover-limiting displacement of the dihydroxyacetone product by benzoquinone. We successfully extended this methodology to other terminal 1,2-diols and symmetric vicinal 1,2-diols and have carried out aerobic oxidation of these substrates catalyzed by 1. Examination of the reactivity of 1 with conformationally-restricted 1,2-cyclohexanediols suggests that the diol must chelate to the Pd center for effective oxidation to the hydroxyketone product. In a separate project, we have also investigated the electrocatalytic reduction of dioxygen by several dinuclear copper complexes, an important reaction for fuel cell applications.
Author: Goutam Brahmachari
Publisher: Elsevier
ISBN: 0128205865
Category : Science
Languages : en
Pages : 642
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Book Description
Green Synthetic Approaches for Biologically Relevant Heterocycles, Second Edition, Volume One: Advanced Synthetic Techniques reviews this significant group of organic compounds within the context of sustainable methods and processes, expanding on the first edition with fully updated coverage and a whole range of new chapters. Volume One explores advanced synthetic techniques, with each chapter presenting in-depth coverage of various green protocols for the synthesis of a wide variety of bioactive heterocycles that are classified on the basis of ring-size and/or the presence of heteroatoms. Techniques covered range from high pressure cycloaddition reactions and microwave irradiation to sustainable one-pot domino reactions. This updated edition is an essential resource on sustainable approaches for academic researchers, R&D professionals, and students working across medicinal, organic, natural product and green chemistry. Provides fully updated coverage of the field of greener heterocycle synthesis Includes new chapters on varied multicomponent reactions, alongside both traditional and novel approaches Presents information in an accessible style with an emphasis on sustainability
Author: Stanford University
Publisher:
ISBN:
Category :
Languages : en
Pages : 476
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Book Description
Author:
Publisher: Elsevier Science
ISBN: 9780080449913
Category : Science
Languages : en
Pages : 12500
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Book Description
Comprehensive Heterocyclic Chemistry III (CHEC-III) is a new 15-volume reference work which provides the first point of entry to the literature for all scientists interested in heterocyclic ring systems. Since publishing in 1984, Comprehensive Heterocyclic Chemistry (CHEC) has become the standard work on the subject, indispensable to all serious readers in the interdisciplinary areas where heterocycles are employed. CHEC-III builds on and complements the material in CHEC and CHEC-II and is designed to be used both alone and in conjunction with these two works. Written by leading scientists who have evaluated and summarized the most important data published over the last decade, Comprehensive Heterocyclic Chemistry III will be an invaluable addition to the reference library of those working with heterocyclic ring systems. Reviews advances in the properties, structure, synthesis, reactivity and applications of the most important heterocyclic ring systems Contains over 250 specialist reviews, logically organized by size and heteroatom content of the heterocyclic ring Saves researchers valuable time and effort through carefully structured critical reviews of the literature by experts
Author: Daimay Lin-Vien
Publisher: Elsevier
ISBN: 0080571166
Category : Science
Languages : en
Pages : 522
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Book Description
This necessary desk reference for every practicing spectroscopist represents the first definitive book written specifically to integrate knowledge about group frequencies in infrared as well as Raman spectra. In the spirit of previous classics developed by Bellamy and others, this volume has expanded its scope and updated its coverage. In addition to detailing characteristic group frequencies of compounds from a comprehensive assortment of categories, the book includes a collection of spectra and a literature search conducted to verify existing correlations and to determine ways to enhance correlations between vibrational frequencies and molecular structure. Particular attention has been given to the correlation between Raman characteristic frequencies and molecular structure. - Constitutes a necessary reference for every practicing vibrational spectroscopist - Provides the new definitive text on characteristic frequencies of organic molecules - Incorporates group frequencies for both infrared and Raman spectra - Details the characteristic IR and Raman frequencies of compounds in more than twenty major categories - Includes an extensive collection of spectra - Compiled by internationally recognized experts
Author: Anil V. Karnik
Publisher: Elsevier
ISBN: 012821063X
Category : Science
Languages : en
Pages : 622
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Book Description
Stereochemistry: A Three-Dimensional Insight draws on the knowledge of its expert authors, providing a systematic treatment on the fundamental aspects of stereochemistry, covering conformational aspects, configurational aspects, effects of bulkiness, stereoelectronic effects on properties of molecules, and the genesis of enantiomerism, among other topics. Visuals and exercises are included to consolidate the principles learned, and the contents are carefully structured to prepare readers for predicting and organizing reaction components to obtain desired stereochemical outcomes. This book is an indispensable guide for all those exploring stereochemistry within their work. The principles of stereochemistry are fundamental to understanding chemical behavior and can provide insights into a whole range of problems, from unusual selectivity and unexpected behaviors, to abnormally fast reactions and surprising biochemical preferences. However, understanding and exploring these 3D effects can be difficult within a 2D medium. This book has been designed to address this problem, providing foundational guidance on the principles and applications of stereochemistry that are fully supported by multimedia visuals. Combines foundational concepts and definitions with examples of stereochemistry in practice Highlights the conformational and configurational impact of atomic arrangement on chemical behavior Outlines methods of analysis Provides practical exercises and detailed multimedia visuals to support learning
Author: Laurence W. McKeen
Publisher: William Andrew
ISBN: 1437734707
Category : Technology & Engineering
Languages : en
Pages : 357
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Book Description
Permeability properties are essential data for the selection of materials and design of products across a broad range of market sectors from food packaging to Automotive applications to Medical Devices. This unique handbook brings together a wealth of permeability data in a form that enables quick like-for-like comparisons between materials. The data is supported by a full explanation of its interpretation, and an introduction to the engineering aspects of permeability in polymers. The third edition includes expanded explanatory text which makes the book accessible to novices as well as experienced engineers, written by industry insider and author Larry McKeen (DuPont), and 20% new data and major new explanatory text sections to aid in the interpretation and application of the data. - A unique collection of permeability data designed to enable quick like-for-like comparisons between different materials - Third edition includes 20% new data and expanded explanatory text, which makes the book accessible to novices as well as experienced engineers - Essential reference for materials engineers, design engineers and applications engineers across sectors including packaging, automotive and medical devices
