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Expanded, contracted & isomeric porphyrins

Author: Jonathan L Sessler; Steven J Weghorn
Publisher: Oxford, U.K. ; New York, NY : Pergamon, 1997.
Series: Tetrahedron organic chemistry series, v. 15.
Edition/Format:   eBook : Document : English : 1st edView all editions and formats
Summary:
The porphyrins are a class of naturally-occurring macrocycles and are ubiquitous in our world. As such, they have been called the Pigments of Life. This auspicious designation reflects their importance in numerous biological functions. Indeed, life as we understand it relies on the full range of biological processes that are either performed by or catalyzed by porphyrin-containing proteins. Chlorophyll-containing  Read more...
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Sessler, Jonathan L.
Expanded, contracted & isomeric porphyrins.
Oxford, U.K. ; New York, NY : Pergamon, 1997
(DLC) 97206877
(OCoLC)37651144
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Jonathan L Sessler; Steven J Weghorn
ISBN: 9780080420929 0080420923 9780080535234 0080535232 1281058645 9781281058645
OCLC Number: 162131033
Description: 1 online resource (xi, 520 pages) : illustrations.
Contents: Chapter headings: Introduction. Contracted Porphyrins. Isomeric Porphyrins. Expanded Porphyrins Containing Four Pyrroles. Contracted Expanded Porphyrins: Sapphyrins and Smaragdyrins. Other Carbon-bridged Pentapyrrolic Systems. Carbon-linked Hexapyrrolic Systems and Heteroatom Analogues. Higher Order Systems. Nitrogen-Bridged Expanded Porphyrins. Applications. Introduction --
Contracted porphyrins --
Isomeric porphyrins --
Expanded porphyrins containing four pyrroles --
Contracted expanded porphyrins: sapphyrins and smaragdyrins --
Other carbon-bridged pentapyrrolic systems --
Carbon-linked hexapyrrolic systems and heteroatom analogs --
Higher order systems --
Nitrogen-bridged expanded porphyrins --
Applications --
Index.
Series Title: Tetrahedron organic chemistry series, v. 15.
Other Titles: Expanded, contracted, and isomeric porphyrins
Responsibility: Jonathan L. Sessler and Steven J. Weghorn.
More information:

Abstract:

The porphyrins are a class of naturally-occurring macrocycles and are ubiquitous in our world. As such, they have been called the Pigments of Life. This auspicious designation reflects their importance in numerous biological functions. Indeed, life as we understand it relies on the full range of biological processes that are either performed by or catalyzed by porphyrin-containing proteins. Chlorophyll-containing photosynthetic reaction centers in plants, for instance, convert light energy into chemical energy while producing oxygen along the way. It is this oxygen, evolved from photosynthesis, that is transported, stored, and reduced by heme-containing proteins in many organisms, including mammals. Not surprisingly, therefore, these molecules remain of fundamental interest to chemists and biochemists. Indeed, they continue to be intensely investigated by researchers world-wide. Inspired by the importance of the porphyrins, a new research direction has emerged in recent years that is devoted to the preparation and study of non-porphyrin polypyrrole macrocycles. Here, the principal objectives have been to generate completely synthetic systems that bear some structural resemblance to naturally-occurring porphyrin derivatives while being quite different in their specific chemical makeup. Within this context, three different research directions have evolved, namely those involving the syntheses of contracted, isomeric, and expanded porphyrins, respectively. It is the chemistry of these systems that is the subject of this book. Because of the newness of the field, the emphasis of this book will be on synthesis and characterization (all work on porphyrin isomers and much of that associated with expanded porphyrins has only appeared in the last 10 years). One chapter on applications has, however, been included. Also, in the context of the preparative portions of the text, some efforts have been made to explain why various porphyrin analogue targets are of interest.

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