Author: Hitomi Suzuki
Publisher: Elsevier
ISBN: 0080538150
Category : Science
Languages : en
Pages : 637
Book Description
This book is written for scientists who require information on organobismuth chemistry, either by specific topic or by compound. "Organobismuth Chemistry" covers, through early 1999, stoichiometric compounds that contain the Bi-C bond; not included, with the exception of a few examples, are inorganic compounds, minerals, metal alloys, and non-stoichiometric materials.Organobismuth chemistry is covered in a comprehensive, self-contained manner. The book focuses on the academic aspects of the field; therefore, references to patents are made only when pertinent. Chapter 1 serves as an introduction to bismuth as the element. In chapters 2 to 4, organobismuth compounds are classified according to the types of compounds and dealt in detail. Chapter 5 is devoted to the use of bismuth and derivatives in organic transformations. In the first four chapters, brief to moderate descriptions for selected experimental procedures are included; they are intended to inform the readers of relevant protocols and should serve in preparative studies which are based on analogies. In the final chapter the X-ray data of fundamental and/or structurally interesting organobismuth (III) and (V) compounds are collected. At the beginning of each chapter, the text is preceded by detailed table of contents of the subject dealt in it. By inspection of the table, it should be possible to locate quickly information on a specific organobismuth compound.Definite efforts have been made to include all factual data pertinent to an understanding of each class of organobismuth compounds. The main attention is paid to the methods of synthesis, molecular structure, and chemical behaviours of organobismuth compounds, although some knowledge of spectroscopy and other physical properties are also included. The format for presenting information has both descriptive information and numerical data. Numerical data are mostly presented in tabular form. Tables of known compounds in each chapter are organized so as to enable the readers to make easy access to the most relevant data source of a compound. The nomenclature does not follow strictly the recommendations of IUPAC, but usage is mostly consistent with common practice in the current literature. In order to help the readers to save time in looking for appropriate spectral data, an effort has also been made to provide the IR, MS, NMR and UV spectral data sources in tabular form. All references for chapters are collected together in a list at the end of the book. In the list, references are given chronologically both in code and in full form, with authors names.This book will appeal to academic and industrial researchers alike, and will be particularly useful to chemists engaged in bench work. In addition it is hoped that this book will provide a stimulus as the basis for further development of organobismuth chemistry.
Organobismuth Chemistry
Author: Hitomi Suzuki
Publisher: Elsevier
ISBN: 0080538150
Category : Science
Languages : en
Pages : 637
Book Description
This book is written for scientists who require information on organobismuth chemistry, either by specific topic or by compound. "Organobismuth Chemistry" covers, through early 1999, stoichiometric compounds that contain the Bi-C bond; not included, with the exception of a few examples, are inorganic compounds, minerals, metal alloys, and non-stoichiometric materials.Organobismuth chemistry is covered in a comprehensive, self-contained manner. The book focuses on the academic aspects of the field; therefore, references to patents are made only when pertinent. Chapter 1 serves as an introduction to bismuth as the element. In chapters 2 to 4, organobismuth compounds are classified according to the types of compounds and dealt in detail. Chapter 5 is devoted to the use of bismuth and derivatives in organic transformations. In the first four chapters, brief to moderate descriptions for selected experimental procedures are included; they are intended to inform the readers of relevant protocols and should serve in preparative studies which are based on analogies. In the final chapter the X-ray data of fundamental and/or structurally interesting organobismuth (III) and (V) compounds are collected. At the beginning of each chapter, the text is preceded by detailed table of contents of the subject dealt in it. By inspection of the table, it should be possible to locate quickly information on a specific organobismuth compound.Definite efforts have been made to include all factual data pertinent to an understanding of each class of organobismuth compounds. The main attention is paid to the methods of synthesis, molecular structure, and chemical behaviours of organobismuth compounds, although some knowledge of spectroscopy and other physical properties are also included. The format for presenting information has both descriptive information and numerical data. Numerical data are mostly presented in tabular form. Tables of known compounds in each chapter are organized so as to enable the readers to make easy access to the most relevant data source of a compound. The nomenclature does not follow strictly the recommendations of IUPAC, but usage is mostly consistent with common practice in the current literature. In order to help the readers to save time in looking for appropriate spectral data, an effort has also been made to provide the IR, MS, NMR and UV spectral data sources in tabular form. All references for chapters are collected together in a list at the end of the book. In the list, references are given chronologically both in code and in full form, with authors names.This book will appeal to academic and industrial researchers alike, and will be particularly useful to chemists engaged in bench work. In addition it is hoped that this book will provide a stimulus as the basis for further development of organobismuth chemistry.
Publisher: Elsevier
ISBN: 0080538150
Category : Science
Languages : en
Pages : 637
Book Description
This book is written for scientists who require information on organobismuth chemistry, either by specific topic or by compound. "Organobismuth Chemistry" covers, through early 1999, stoichiometric compounds that contain the Bi-C bond; not included, with the exception of a few examples, are inorganic compounds, minerals, metal alloys, and non-stoichiometric materials.Organobismuth chemistry is covered in a comprehensive, self-contained manner. The book focuses on the academic aspects of the field; therefore, references to patents are made only when pertinent. Chapter 1 serves as an introduction to bismuth as the element. In chapters 2 to 4, organobismuth compounds are classified according to the types of compounds and dealt in detail. Chapter 5 is devoted to the use of bismuth and derivatives in organic transformations. In the first four chapters, brief to moderate descriptions for selected experimental procedures are included; they are intended to inform the readers of relevant protocols and should serve in preparative studies which are based on analogies. In the final chapter the X-ray data of fundamental and/or structurally interesting organobismuth (III) and (V) compounds are collected. At the beginning of each chapter, the text is preceded by detailed table of contents of the subject dealt in it. By inspection of the table, it should be possible to locate quickly information on a specific organobismuth compound.Definite efforts have been made to include all factual data pertinent to an understanding of each class of organobismuth compounds. The main attention is paid to the methods of synthesis, molecular structure, and chemical behaviours of organobismuth compounds, although some knowledge of spectroscopy and other physical properties are also included. The format for presenting information has both descriptive information and numerical data. Numerical data are mostly presented in tabular form. Tables of known compounds in each chapter are organized so as to enable the readers to make easy access to the most relevant data source of a compound. The nomenclature does not follow strictly the recommendations of IUPAC, but usage is mostly consistent with common practice in the current literature. In order to help the readers to save time in looking for appropriate spectral data, an effort has also been made to provide the IR, MS, NMR and UV spectral data sources in tabular form. All references for chapters are collected together in a list at the end of the book. In the list, references are given chronologically both in code and in full form, with authors names.This book will appeal to academic and industrial researchers alike, and will be particularly useful to chemists engaged in bench work. In addition it is hoped that this book will provide a stimulus as the basis for further development of organobismuth chemistry.
Chemistry of Arsenic, Antimony and Bismuth
Author: N.C. Norman
Publisher: Springer Science & Business Media
ISBN: 9780751403893
Category : Science
Languages : en
Pages : 508
Book Description
This book provides a detailed, wide ranging and up-to-date review of all aspects of the chemistry of the elements arsenic, antimony and bismuth. The chapters are written by an international team of authors each of whom is both active and expert in their particular field. The coverage includes chapters on general properties and periodicity, the elements themselves, inorganic derivatives of the elements, co-ordination and solution chemistry, organocompounds, organotransition metal compounds, environmental and medicinal aspects and analytical methods. This volume will be of particular value to graduate and postgraduate chemists and materials scientists in both industry and academia who are concerned with any aspect of the chemistry of these three elements and will also be an essential addition to the reference section of any chemistry library.
Publisher: Springer Science & Business Media
ISBN: 9780751403893
Category : Science
Languages : en
Pages : 508
Book Description
This book provides a detailed, wide ranging and up-to-date review of all aspects of the chemistry of the elements arsenic, antimony and bismuth. The chapters are written by an international team of authors each of whom is both active and expert in their particular field. The coverage includes chapters on general properties and periodicity, the elements themselves, inorganic derivatives of the elements, co-ordination and solution chemistry, organocompounds, organotransition metal compounds, environmental and medicinal aspects and analytical methods. This volume will be of particular value to graduate and postgraduate chemists and materials scientists in both industry and academia who are concerned with any aspect of the chemistry of these three elements and will also be an essential addition to the reference section of any chemistry library.
Bismuth-Mediated Organic Reactions
Author: Thierry Ollevier
Publisher: Springer Science & Business Media
ISBN: 364227238X
Category : Science
Languages : en
Pages : 287
Book Description
Bismuth Catalysts in Aqueous Media, by Shū Kobayashi, Masaharu Ueno and Taku Kitanosono.- Pentavalent Organobismuth Reagents in Organic Synthesis: Alkylation, Alcohol Oxidation and Cationic Photopolymerization , by Yoshihiro Matano.- Environmentally Friendly Organic Synthesis Using Bismuth(III) Compounds, by Scott W. Krabbe and Ram S. Mohan.- Bismuth-Catalyzed Addition of Silyl Nucleophiles to Carbonyl Compounds and Imines, by Thierry Ollevier.- Bismuth Salts in Catalytic Alkylation Reactions, by Magnus Rueping and Boris J. Nachtsheim.- New Applications for Bismuth(III) Salts in Organic Synthesis: From Bulk Chemicals to Steroid and Terpene Chemistry, by J. A. R. Salvador, S. M. Silvestre, R. M. A. Pinto, R. C. Santos and C. Le Roux.- Cationic Bismuth-Catalyzed Hydroamination and Direct Substitution of the Hydroxy Group in Alcohols with Amides, by Shigeki Matsunaga and Masakatsu Shibasaki.- Transition-Metal Catalyzed C–C Bond Formation Using Organobismuth Compounds, by Shigeru Shimada and Maddali L. N. Rao.- Bismuth(III) Salts as Synthetic Tools in Organic Transformations, by J. S. Yadav, Aneesh Antony and Basi V. Subba Reddy.
Publisher: Springer Science & Business Media
ISBN: 364227238X
Category : Science
Languages : en
Pages : 287
Book Description
Bismuth Catalysts in Aqueous Media, by Shū Kobayashi, Masaharu Ueno and Taku Kitanosono.- Pentavalent Organobismuth Reagents in Organic Synthesis: Alkylation, Alcohol Oxidation and Cationic Photopolymerization , by Yoshihiro Matano.- Environmentally Friendly Organic Synthesis Using Bismuth(III) Compounds, by Scott W. Krabbe and Ram S. Mohan.- Bismuth-Catalyzed Addition of Silyl Nucleophiles to Carbonyl Compounds and Imines, by Thierry Ollevier.- Bismuth Salts in Catalytic Alkylation Reactions, by Magnus Rueping and Boris J. Nachtsheim.- New Applications for Bismuth(III) Salts in Organic Synthesis: From Bulk Chemicals to Steroid and Terpene Chemistry, by J. A. R. Salvador, S. M. Silvestre, R. M. A. Pinto, R. C. Santos and C. Le Roux.- Cationic Bismuth-Catalyzed Hydroamination and Direct Substitution of the Hydroxy Group in Alcohols with Amides, by Shigeki Matsunaga and Masakatsu Shibasaki.- Transition-Metal Catalyzed C–C Bond Formation Using Organobismuth Compounds, by Shigeru Shimada and Maddali L. N. Rao.- Bismuth(III) Salts as Synthetic Tools in Organic Transformations, by J. S. Yadav, Aneesh Antony and Basi V. Subba Reddy.
Basic Organometallic Chemistry
Author: Ionel Haiduc
Publisher: Walter de Gruyter
ISBN: 3110847884
Category : Science
Languages : en
Pages : 517
Book Description
Publisher: Walter de Gruyter
ISBN: 3110847884
Category : Science
Languages : en
Pages : 517
Book Description
The Chemistry of Pincer Compounds
Author: David Morales-Morales
Publisher: Elsevier
ISBN: 0080545157
Category : Science
Languages : en
Pages : 467
Book Description
Pincer complexes are formed by the binding of a chemical structure to a metal atom with at least one carbon-metal bond. Usually the metal atom has three bonds to a chemical backbone, enclosing the atom like a pincer. The resulting structure protects the metal atom and gives it unique properties.The last decade has witnessed the continuous growth in the development of pincer complexes. These species have passed from being curiosity compounds to chemical chameleons able to perform a wide variety of applications. Their unique metal bound structures provide some of the most active catalysts yet known for organic transformations involving the activation of bonds. The Chemistry of Pincer Compounds details use of pincer compounds including homogeneous catalysis, enantioselective organic transformations, the activation of strong bonds, the biological importance of pincer compounds as potential therapeutic or pharmaceutical agents, dendrimeric and supported materials.* Describes the chemistry and applications of this important class of organometallic and coordination compounds* Covers the areas in which pincer complexes have had an impact* Includes information on more recent and interesting pincer compounds not just those that are well-known
Publisher: Elsevier
ISBN: 0080545157
Category : Science
Languages : en
Pages : 467
Book Description
Pincer complexes are formed by the binding of a chemical structure to a metal atom with at least one carbon-metal bond. Usually the metal atom has three bonds to a chemical backbone, enclosing the atom like a pincer. The resulting structure protects the metal atom and gives it unique properties.The last decade has witnessed the continuous growth in the development of pincer complexes. These species have passed from being curiosity compounds to chemical chameleons able to perform a wide variety of applications. Their unique metal bound structures provide some of the most active catalysts yet known for organic transformations involving the activation of bonds. The Chemistry of Pincer Compounds details use of pincer compounds including homogeneous catalysis, enantioselective organic transformations, the activation of strong bonds, the biological importance of pincer compounds as potential therapeutic or pharmaceutical agents, dendrimeric and supported materials.* Describes the chemistry and applications of this important class of organometallic and coordination compounds* Covers the areas in which pincer complexes have had an impact* Includes information on more recent and interesting pincer compounds not just those that are well-known
Main-Group Metal Organometallics in Organic Synthesis
Author: A. McKillop
Publisher: Elsevier
ISBN: 9780080423180
Category : Science
Languages : en
Pages : 698
Book Description
The individual chapters in this volume cover the scope and impact of main group organometallic compounds and reagents on organic synthesis during the last ten to fifteen years. In a number of chapters, topics are dealt with in detail that either were not covered at all in COMC (eg selenium, tellurium) or were given scant attention (eg oxymercuration, organoantimony compounds). Certain topics, like directed metallation and LiKOR bases have only achieved prominence in synthesis in the last ten years, and are now reviewed by leading experts.
Publisher: Elsevier
ISBN: 9780080423180
Category : Science
Languages : en
Pages : 698
Book Description
The individual chapters in this volume cover the scope and impact of main group organometallic compounds and reagents on organic synthesis during the last ten to fifteen years. In a number of chapters, topics are dealt with in detail that either were not covered at all in COMC (eg selenium, tellurium) or were given scant attention (eg oxymercuration, organoantimony compounds). Certain topics, like directed metallation and LiKOR bases have only achieved prominence in synthesis in the last ten years, and are now reviewed by leading experts.
Arrow Pushing in Inorganic Chemistry
Author: Abhik Ghosh
Publisher: John Wiley & Sons
ISBN: 1118924533
Category : Science
Languages : en
Pages : 356
Book Description
Involved as it is with 95% of the periodic table, inorganic chemistry is one of the foundational subjects of scientific study. Inorganic catalysts are used in crucial industrial processes and the field, to a significant extent, also forms the basis of nanotechnology. Unfortunately, the subject is not a popular one for undergraduates. This book aims to take a step to change this state of affairs by presenting a mechanistic, logical introduction to the subject. Organic teaching places heavy emphasis on reaction mechanisms - "arrow-pushing" - and the authors of this book have found that a mechanistic approach works just as well for elementary inorganic chemistry. As opposed to listening to formal lectures or learning the material by heart, by teaching students to recognize common inorganic species as electrophiles and nucleophiles, coupled with organic-style arrow-pushing, this book serves as a gentle and stimulating introduction to inorganic chemistry, providing students with the knowledge and opportunity to solve inorganic reaction mechanisms. • The first book to apply the arrow-pushing method to inorganic chemistry teaching • With the reaction mechanisms approach ("arrow-pushing"), students will no longer have to rely on memorization as a device for learning this subject, but will instead have a logical foundation for this area of study • Teaches students to recognize common inorganic species as electrophiles and nucleophiles, coupled with organic-style arrow-pushing • Provides a degree of integration with what students learn in organic chemistry, facilitating learning of this subject • Serves as an invaluable companion to any introductory inorganic chemistry textbook
Publisher: John Wiley & Sons
ISBN: 1118924533
Category : Science
Languages : en
Pages : 356
Book Description
Involved as it is with 95% of the periodic table, inorganic chemistry is one of the foundational subjects of scientific study. Inorganic catalysts are used in crucial industrial processes and the field, to a significant extent, also forms the basis of nanotechnology. Unfortunately, the subject is not a popular one for undergraduates. This book aims to take a step to change this state of affairs by presenting a mechanistic, logical introduction to the subject. Organic teaching places heavy emphasis on reaction mechanisms - "arrow-pushing" - and the authors of this book have found that a mechanistic approach works just as well for elementary inorganic chemistry. As opposed to listening to formal lectures or learning the material by heart, by teaching students to recognize common inorganic species as electrophiles and nucleophiles, coupled with organic-style arrow-pushing, this book serves as a gentle and stimulating introduction to inorganic chemistry, providing students with the knowledge and opportunity to solve inorganic reaction mechanisms. • The first book to apply the arrow-pushing method to inorganic chemistry teaching • With the reaction mechanisms approach ("arrow-pushing"), students will no longer have to rely on memorization as a device for learning this subject, but will instead have a logical foundation for this area of study • Teaches students to recognize common inorganic species as electrophiles and nucleophiles, coupled with organic-style arrow-pushing • Provides a degree of integration with what students learn in organic chemistry, facilitating learning of this subject • Serves as an invaluable companion to any introductory inorganic chemistry textbook
Comprehensive Medicinal Chemistry II
Author: David J Triggle
Publisher: Elsevier
ISBN: 0080445136
Category : Medical
Languages : en
Pages : 9367
Book Description
The first edition of Comprehensive Medicinal Chemistry was published in 1990 and was very well received. Comprehensive Medicinal Chemistry II is much more than a simple updating of the contents of the first edition. Completely revised and expanded, this new edition has been refocused to reflect the significant developments and changes over the past decade in genomics, proteomics, bioinformatics, combinatorial chemistry, high-throughput screening and pharmacology, and more. The content comprises the most up-to-date, authoritative and comprehensive reference text on contemporary medicinal chemistry and drug research, covering major therapeutic classes and targets, research strategy and organisation, high-throughput technologies, computer-assisted design, ADME and selected case histories. It is this coverage of the strategy, technologies, principles and applications of medicinal chemistry in a single work that will make Comprehensive Medicinal Chemistry II a unique work of reference and a single point of entry to the literature for pharmaceutical and biotechnology scientists of all disciplines and for many industry executives as well. Also available online via ScienceDirect (2006) - featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. Comprehensively reviews - the strategies, technologies, principles and applications of modern medicinal chemistry Provides a global and current perspective of today's drug discovery process and discusses the major therapeutic classes and targets Includes a unique collection of case studies and personal assays reviewing the discovery and development of key drugs
Publisher: Elsevier
ISBN: 0080445136
Category : Medical
Languages : en
Pages : 9367
Book Description
The first edition of Comprehensive Medicinal Chemistry was published in 1990 and was very well received. Comprehensive Medicinal Chemistry II is much more than a simple updating of the contents of the first edition. Completely revised and expanded, this new edition has been refocused to reflect the significant developments and changes over the past decade in genomics, proteomics, bioinformatics, combinatorial chemistry, high-throughput screening and pharmacology, and more. The content comprises the most up-to-date, authoritative and comprehensive reference text on contemporary medicinal chemistry and drug research, covering major therapeutic classes and targets, research strategy and organisation, high-throughput technologies, computer-assisted design, ADME and selected case histories. It is this coverage of the strategy, technologies, principles and applications of medicinal chemistry in a single work that will make Comprehensive Medicinal Chemistry II a unique work of reference and a single point of entry to the literature for pharmaceutical and biotechnology scientists of all disciplines and for many industry executives as well. Also available online via ScienceDirect (2006) - featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. Comprehensively reviews - the strategies, technologies, principles and applications of modern medicinal chemistry Provides a global and current perspective of today's drug discovery process and discusses the major therapeutic classes and targets Includes a unique collection of case studies and personal assays reviewing the discovery and development of key drugs
Organometallic Pincer Chemistry
Author: Gerard van Koten
Publisher: Springer
ISBN: 3642310818
Category : Science
Languages : en
Pages : 363
Book Description
Gerard van Koten: The Mono-anionic ECE-Pincer Ligand - a Versatile Privileged Ligand Platform: General Considerations.- Elena Poverenov, David Milstein: Non-Innocent Behavior of PCP and PCN Pincer Ligands of Late Metal Complexes.- Dean M. Roddick: Tuning of PCP Pincer Ligand Electronic and Steric Properties.- Gemma R. Freeman, J. A. Gareth Williams: Metal Complexes of Pincer Ligands: Excited States, Photochemistry, and Luminescence.- Davit Zargarian, Annie Castonguay, Denis M. Spasyuk: ECE-Type Pincer Complexes of Nickel.- Roman Jambor and Libor Dostál: The Chemistry of Pincer Complexes of 13 - 15 Main Group Elements.- Kálmán J. Szabo: Pincer Complexes as Catalysts in Organic Chemistry.- Jun-ichi Ito and Hisao Nishiyama: Optically Active Bis(oxazolinyl)phenyl Metal Complexes as Multi-potent Catalysts.- Anthony St. John, Karen I. Goldberg, and D. Michael Heinekey: Pincer Complexes as Catalysts for Amine Borane Dehydrogenation.- Dmitri Gelman and Ronit Romm: PC(sp3)P Transition Metal Pincer Complexes: Properties and Catalytic Applications.- Jennifer Hawk and Steve Craig: Physical Applications of Pincer Complexes.
Publisher: Springer
ISBN: 3642310818
Category : Science
Languages : en
Pages : 363
Book Description
Gerard van Koten: The Mono-anionic ECE-Pincer Ligand - a Versatile Privileged Ligand Platform: General Considerations.- Elena Poverenov, David Milstein: Non-Innocent Behavior of PCP and PCN Pincer Ligands of Late Metal Complexes.- Dean M. Roddick: Tuning of PCP Pincer Ligand Electronic and Steric Properties.- Gemma R. Freeman, J. A. Gareth Williams: Metal Complexes of Pincer Ligands: Excited States, Photochemistry, and Luminescence.- Davit Zargarian, Annie Castonguay, Denis M. Spasyuk: ECE-Type Pincer Complexes of Nickel.- Roman Jambor and Libor Dostál: The Chemistry of Pincer Complexes of 13 - 15 Main Group Elements.- Kálmán J. Szabo: Pincer Complexes as Catalysts in Organic Chemistry.- Jun-ichi Ito and Hisao Nishiyama: Optically Active Bis(oxazolinyl)phenyl Metal Complexes as Multi-potent Catalysts.- Anthony St. John, Karen I. Goldberg, and D. Michael Heinekey: Pincer Complexes as Catalysts for Amine Borane Dehydrogenation.- Dmitri Gelman and Ronit Romm: PC(sp3)P Transition Metal Pincer Complexes: Properties and Catalytic Applications.- Jennifer Hawk and Steve Craig: Physical Applications of Pincer Complexes.
Reason And Imagination: Reflections On Research In Organic Chemistry- Selected Papers Of Derek H R Barton
Author: Derek H R Barton
Publisher: World Scientific
ISBN: 9814504335
Category : Science
Languages : en
Pages : 891
Book Description
This book is about the recognition of new principles in Organic Chemistry. It is also about the discovery and invention of Chemical Reactions. In addition, it deals with the determination of structure by chemical degradation during the epoch when physical methods were not well developed. Also presented are new reagents and new types of functional groups never seen in chemistry before. The overall aim of the collected papers is to show how thought can direct original research and to demonstrate how thought about old or new chemical facts can lead to originality. This is further illuminated by commentaries which Prof Barton has written to accompany these papers.
Publisher: World Scientific
ISBN: 9814504335
Category : Science
Languages : en
Pages : 891
Book Description
This book is about the recognition of new principles in Organic Chemistry. It is also about the discovery and invention of Chemical Reactions. In addition, it deals with the determination of structure by chemical degradation during the epoch when physical methods were not well developed. Also presented are new reagents and new types of functional groups never seen in chemistry before. The overall aim of the collected papers is to show how thought can direct original research and to demonstrate how thought about old or new chemical facts can lead to originality. This is further illuminated by commentaries which Prof Barton has written to accompany these papers.