Ellis Horwood: New York. ISBN When an overall up-to-date summary of the relevant advances in a given field is being searched for, it is fortunate to be able to find such a thorough and informative collection of articles as the editors have assembled in this treatise on polymer photochemistry. One of the most impressive aspects of this book is the broadness of the coverage, ranging from articles on photoimaging systems to those on weathering of relevant industrial polymers.
All aspects of polymer photochemistry, photophysics, photodegradation, and photoinitiated polymerization are covered by the leading researchers in the field. As well, complimentary topics involving pulse radiolysis and photooxidation are presented. More specifically, the photodegradation of numerous polymers, including styrene-based polymers, polyolefins, and lignin are reviewed, and chapters on stabilizers are included.
Special photochemical topics are included in chapters on imaging, photoconductivity, luminescence spectroscopy, topochemical photopolymerization, photostability of conductive polymers, nonlinear optical processes in conjugated polymers, and the use of microwave measurements to investigate titanium dioxide photoactivity. Overall, the book is an exciting, up to date account of some of the latest work in the rapidly developing polymer photochemistry field.
It should be equally appealing to industrial and academic scientists, and is highly recommended for anyone wanting to catch up on the most recent activity in the field. Charles E. By Dennis P. Curran University of Pittsburgh , Ned A. VCH: New York. This well-written book reviews the status of stereoselective radical reactions and serves as a welcome companion to other books on stereoselective reactions which focus almost exclusively on ionic processes.
Each of the authors of the present book has made significant contributions to the development and understanding of stereoselective radical reactions. They have now come together to produce the first comprehensive book in which the principles of conformational analysis of organic molecules and the structure and reactivity of radicals are used to understand and even to predict the stereochemical outcome of the various classes of stereoselective radical reactions. After a short introductory chapter recapitulating some of the more important features of radical reactions, the various classes of stereoselective radical reaction are surveyed in five additional chapters.
Chapter 2 is the longest of these and reviews substrate-controlled radical cyclization in which an achiral radical bearing prostereogenic radical and alkene centers can lead by way of kinetically controlled cyclizations to achiral or chiral diastereomers in differing amounts.
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If an enantiomer of a chiral radical is used and if the radical or alkene centers are prostereogenic, then cyclization can occur with asymmetric induction, leading to single enantiomers of two chiral diastereomers in unequal amounts. An outstanding feature of this chapter is the excellent discussion of the Beckwith-Houk model for the prediction of the diastereomeric excess in the cyclization of 1-, 2-, 3-, and 4-substituted hexenyl radicals, and the utilization of the process for the synthesis of a variety of ring systems.
Chapters 3 and 4 survey stereoselectivity of other substrate-controlled reactions of, respectively, cyclic and acyclic radicals. With cyclic radicals the number of reactive conformers is reduced, and because of steric reasons, the attack occurs preferentially anti to the shielding substituent, while a prerequisite for stereoselective reactions of acyclic radicals is the existence of a preferred conformation in which the substituents shield the two faces of the prochiral radical to a different extent.
- Stereoselective radical reactions.
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The configuration of new stereogenic centers formed from acyclic prostereogenic radical centers may be controlled by a chiral group attached to the radical or attached to the alkene. If the chiral group may be subsequently removed after the stereochemically defining reaction, the chiral group is designated a chiral auxiliary, and as discussed in Chapter 5, the chiral group intended to control the configuration of the newly formed stereogenic center must be fixed relative to the prostereogenic radical center.
Stereochemistry of Radical Reactions: Concepts, Guidelines, and - PDF Free Download
Both the usefulness for stereoselectivity and the problems for removal encountered with these and other chiral auxiliaries are discussed in some detail. One section in Chapter 5 is concerned with chiral auxiliary-controlled addition reaction of radicals to alkenes leading to telomerization and polymerization with good to excellent stereoselectivity, resulting in the reinvestigation of the control of the stereochemistry in radical polymerization. Finally, Chapter 6 reviews three additional classes of stereoselective radical reactions: radical pair coupling reactions leading to the ground state product or two alkenes by radical pair disproportionation, radical rearrangements, and alkeneforming reactions.
The book is well organized, and the very few typographical errors J. At the end of each chapter there is a list of references, in all, many containing two, three, or more literature citations. Of these, only a very few are dated prior to with a great number from the s and some even from The book then will be of interest to a wide range of organic chemists, is an absolute necessity for every chemistry departmental library, and will serve as a valuable supplement for both undergraduate and graduate courses in synthetic organic chemistry. Synthetic chemists will also want to read this book and to have it at the ready on his or her bookshelf.
Howard E. Emerging Technologies and Business Opportunities. Edited by Paras N. Plenum Press: New York.
As explained in the Preface, it succeeds earlier proceedings volumes also published by Plenum covering conferences held in in New Delhi and in Jakarta. The stated goals of the conference and, hence, the book are threefold: i to highlight advances and new findings in polymers and advanced materials; ii to assemble leading international scientists, engineers, and top-level industrial management for discussions on the current status of advanced materials, new technologies, and industrial opportunities; and iii to foster global communication in polymers and advanced materials technology.
After inspection of the contents of this book, one must conclude that the conference organizers and participants ably fulfilled their goals. The 81 separate articles contained in this volume are authored by an international cast of scientists spanning a wide range of disciplines including polymer chemistry and physics, mechanical and aerospace engineering, electronics and optoelectronics, bioengineering, and even industrial business management.
Clearly, there is something here for everyone. The contents of the volume are divided into ten headings, namely, Composites and Blends 17 , High Performance Polymers 11 , Materials for Electronics 12 , Materials for Photonics 12 , Biomaterials 6 , Recycling of Materials 5 , Sol-Gel and Chemically Processed Materials 4 , Materials from Natural Products 5 , Multifunction and Smart Materials 4 , and Business Opportunities 5 , where the figure in parentheses refers to the number of articles under each heading.
In the present age of striving toward diversity, this book cannot be accused of being noninclusive. The articles themselves are difficult to describe collectively. Page: 1 of 2 The titles shown in BOLD have items available, non bold titles do not have any items in stock. Year: 1 4 1 2 2 2 3 2 1 1 Show more Year.
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