Download or read book Syntheses of Pyrroles and Porphyrins written by Ralph W. Kaesler and published by . This book was released on 1983 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Part I The Synthesis of Porphyrins Part II The Synthesis and Reactions of Pyrroles written by Kim Steven Chamberlin and published by . This book was released on 1979 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Syntheses of Pyrroles and Porphyrins with Fused Heterocyclic Rings written by Catherine M. Cillo and published by . This book was released on 2004 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Syntheses of Novel Regiospecifically Substituted Di pyrroles Porphyrins and Reduced Porphyrin Systems written by David Asher Lee and published by . This book was released on 1995 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Porphyrins V1 written by David Dolphin and published by Elsevier. This book was released on 2012-12-02 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Porphyrins, Volume I: Structure and Synthesis, Part Ais the first in a series of seven volumes and covers topics like nomenclature, purification, and structural determination of porphyrins, metalloporphyrins, and other related compounds. This volume serves to be a critical review of the topics covered and presents a complete and comprehensible discussion on the chemistry and biochemistry of porphyrins. The chapters in the text tackle the history and geochemistry of porphyrins and related systems. Also covered and discussed in the chapters is the synthesis of porphyrins from mono-, di-, and tetrapyrrolic intermediates. The isolation and modification of porphyrins from natural sources are also discussed. Other related compounds are also included, such as metallo-, aza-, and N-methylporphyrins, and their synthesis and properties. This book is a good introduction and reference for students studying in the fields of chemistry and biochemistry.
Download or read book Part I the Synthesis of Porphyrins written by Dah-chieh Otto Cheng and published by . This book was released on 1977 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Expanding the Synthesis and Applications of Morpholine based Pyrrole Modified Porphyrins written by Meenakshi Sharma and published by . This book was released on 2018 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thesis proposes to refine and extend the 'porphyrin breaking and mending' methodology, to modify known and novel pyrrole-modified porphyrins (PMPs), to evaluate their (photo)physical properties in theory and experiment, and to explore - alone and in collaboration with specialty groups - their applications. The investigations were carried out such that the steric (e.g., ring-size of the non-pyrrolic heterocycle; beta-to-ortho-phenyl linkages) and electronic influences (e.g., degree of saturation of the macrocycle, nature of functional groups) of the modifications on the physical properties of the PMPs could be delineated. The reaction of beta-octaalkylporphyrins (octaethylporphyrin and etioporphyrin I) with ozone to generate chlorin-like chromophores was studied. Such a reaction was described firstly over 80 years ago but was not understood at the time. The work expands on the knowledge of converting porphyrins to porphyrinoids containing non-pyrrolic heterocycles of potential utility. We introduce novel methodologies toward the synthesis of porphyrinoids carrying beta-to-ortho-phenyl fusions and expand on the scope and limits of the chemistry and interconversion of pyrrole-modified porphyrins. The macrocycle conformation of [meso-tetraarylporphyrinato] metal complexes is metal-dependent. Furthermore, hydroporphyrins and some of their analogues are known to be more conformationally flexible than the parent porphyrins, but the extent to which this is reflected in their metal-dependent conformations was much less studied. Therefore, their conformations were determined using X-ray crystal structure diffractometry and compared against those of their free bases, as well as against the conformations of the corresponding metalloporphyrins to further define the conformational and electronic effects governing pyrrole-modified porphyrins.
Download or read book The Synthesis and Complexation of Porphyrin Analogs and Pyrrole containing Receptors written by Andrew Papoulis and published by . This book was released on 1992 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemistry of Pyrroles written by Boris A. Trofimov and published by CRC Press. This book was released on 2014-10-13 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last 30 years, knowledge of the essential role that pyrrole structures play in the chemistry of living organisms, drug design, and the development of advanced materials has increased. Correspondingly, research on the diverse issues of synthetic, theoretical, and applied chemistry has snowballed. Devoted to the latest achievements of this field, Chemistry of Pyrroles covers the discovery and development of a novel, facile, and highly effective method for the construction of the pyrrole ring from ketones (ketoximes) and acetylene in superbase catalytic systems (Trofimov reaction). It provides cutting-edge details on the preparation of valuable but previously inaccessible pyrrole compounds. It includes approximately 1,000 structures of novel pyrrole compounds, their yields, and physical-chemical characteristics. The authors analyze conditions of typical syntheses, limitations of their applicability, and possibility of vinyl chloride or dichloroethane application instead of acetylene. They examine chemical engineering aspects of the first synthesis of tetrahydroindole and indole from commercially available oxime of cyclohexanone and acetylene. In addition, the book discusses new facets of pyrroles and N-vinyl pyrroles reactivity in the reactions with the participation of both the pyrrole ring and N-vinyl groups. The book provides condensed, clear-cut information on novel syntheses of substituted pyrroles as key structural units of living matter (chlorophyll and hemoglobin), pharmaceuticals, and monomers for optoelectronic materials. It includes tables that provide references to original works, forming a guide to a variety of the reactions and synthesized compounds discussed. With coverage of the broad range of pyrrole chemistry and methods for their synthesis, it provides both a theoretical and an experimental basis for drug design.
Download or read book Synthesis of Pyrrole modified Porphyrins Oxachlorins and the Beckmann Rearrangement of Octaethyl 2 oxa chlorin Oxime written by Eileen V Meehan and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Novel Methods for Pyrrole Synthesis written by Paulson Mathew and published by LAP Lambert Academic Publishing. This book was released on 2010-10 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functionalized pyrroles belong to an extremely attractive domain in heterocyclic chemistry as a result of their diverse bioactivities and its incorporation in various natural products, including porphyrins. The book addresses development of novel approaches for the synthesis of substituted pyrroles and their applications in the total synthesis of marine anticancer agents like lamellarin O, lamellarin Q, lukianol A and rigidin. Major part of the work illustrates the syntheses of ketene-N, S-acetals and its transformation to functionalised pyrroles. The book illustrates methods for the partial or complete sulfhydrolysis of dithioacetals to thiol esters or aldehydes respectively. A full review on methods for pyrrole synthesis has been made and included as a separate chapter. Appropriate literature reviews and original spectra, and detailed experimental procedures are included under main titles for originality and thoroughness. The book will definitely help advanced undergraduate students as well as doctoral students in organising their project work. The book can help the industry people who are engaged in developing anticancer agents
Download or read book Expanded Contracted Isomeric Porphyrins written by J.L. Sessler and published by Elsevier. This book was released on 1997-08-21 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Porphyrin Handbook written by Karl Kadish and published by Academic Press. This book was released on 1999-10-29 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists in such fields as mathematics, physics, chemistry, biochemistry, biology, and medicine are currently involved in investigations of porphyrins and their numerous analogues and derivatives. Porphyrins are being used as platforms for the study of theoretical principles, as catalysts, as drugs, as electronic devices, and as spectroscopic probes in biology and medicine. The need for an up-to-date and authoritative treatise on the porphyrin system has met with universal acclaim amongst scientists and investigators. The Porphyrin Handbook represents a timely publication dealing with the recent chemistry, physics, biology, and medicine of porphyrins and related macrocycles. This publication will be a major reference source in this field for the new millennium. Editors are world-renowned experts in their particular fields of physical chemistry, bio-organic chemistry, and organometallic chemistry Consists of several thousand pages of articles written by internationally recognized experts Biological relevance of porphyrins is linked to their chemical, physical, and structural features Clear, concise, and uniform presentation with many hundreds of figures, tables and structural formulae Of interest to theorists, physicists, chemists, biochemists, biologists, and medical scientists
Download or read book Organic Syntheses Based on Name Reactions and Unnamed Reactions written by Alfred Hassner and published by Elsevier. This book was released on 2013-10-22 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetically useful organic reactions or reagents are often referred to by the name of the discoverer(s) or developer(s). Older name reactions are described in text books, but more recently developed synthetically useful reactions that may have been associated occasionally with a name are not always well known. For neither of the above are experimental procedures or references easy to find. In this monograph approximately 500 name reactions are included, of which over 200 represent newer name reactions and modern reagents. Each of these reactions are extremely useful for the contemporary organic chemistry researcher in industry or academic institutions. This book provides the information in an easily accessible form. In addition to seminal references and reviews, one or more examples for each name reaction are provided and a complete typical experimental procedure is included, to enable the student or researcher to immediately evaluate reaction conditions. Besides an alphabetical listing of reactions and reagents, cross references permit the organic practitioner to find those name reactions or reagents that enable specific transformations, such as, conversion of amines to nitriles, stereoselective reduction, fluoroalkylation, phenol alkynylation, asymmetric syntheses, allylic alkylation, nucleoside synthesis, cyclopentanation, hydrozirconation, to name a few. Emphasis has been placed on stereoselective and regioselective transformations as well as on enantioselective processes. The listing of reactions and reagents is supported by four indexes.
Download or read book The Synthesis and Characterization of Porphyrins and Metalloporphyrins with Electron Withdrawing Pyrrole Substituents written by Ataollah Shirazi and published by . This book was released on 1981 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pyrrole written by Colin Welch and published by . This book was released on 2020-02-19 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pyrrole: Synthesis and Applications provides an overview of polypyrrole synthesis by different methods such as chemical polymerization, lecetro-polymerization, photo-initiated polymerization and γ irradiated polymerization.Pyrrole derivatives play a crucial role in organic chemistry, medicinal chemistry, and heterocyclic chemistry. Pyrrole scaffold is extensively used in the synthesis of drug molecules with various pharmacological properties, as well as in material sciences.Finally, the authors review studies on the electrical properties of hybrid polymers which revealed that their electrical conductivity increased markedly with the proportion of pyrrole in the initial mixture. This is attributed to the formation of an electrically conducting polymer network in the non-conducting methacrylate matrix.
Download or read book The Porphyrin Handbook Volume 1 written by Karl Kadish and published by Elsevier. This book was released on 2000 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists in such fields as mathematics, physics, chemistry, biochemistry, biology, and medicine are currently involved in investigations of porphyrins and their numerous analogues and derivatives. Porphyrins are being used as platforms for the study of theoretical principles, as catalysts, as drugs, as electronic devices, and as spectroscopic probes in biology and medicine. The need for an up-to-date and authoritative treatise on the porphyrin system has met with universal acclaim amongst scientists and investigators.
