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Author: Herbert C. Brown
Publisher: Springer Science & Business Media
ISBN: 1461341183
Category : Technology & Engineering
Languages : en
Pages : 312
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Book Description
1. That Fascinating Nonclassical Ion Problem.- 1.1. Introduction.- 1.2. Origins.- 1.3. The Nonclassical Ion Era.- 1.4. Steric Assistance.- 1.5. An Alternative Interpretation.- 1.6. The Rococo Period of Carbonium Ion Structures.- 1.7. Difficulties in Challenging an Accepted Theory.- 1.8. Further Difficulties-A "Soft" Theory.- 1.9. Still Further Difficulties-Selective Reviews.- 1.10. Conclusion.- Comments.- 2. Steric Assistance in Solvolytic Processes.- 2.1. Introduction.- 2.2. Steric Assistance in the Solvolysis of Highly Branched Alkyl Derivatives.- 2.3. Steric Assistance in the Relative Effec.
Author: Herbert C. Brown
Publisher: Springer Science & Business Media
ISBN: 1461341183
Category : Technology & Engineering
Languages : en
Pages : 312
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Book Description
1. That Fascinating Nonclassical Ion Problem.- 1.1. Introduction.- 1.2. Origins.- 1.3. The Nonclassical Ion Era.- 1.4. Steric Assistance.- 1.5. An Alternative Interpretation.- 1.6. The Rococo Period of Carbonium Ion Structures.- 1.7. Difficulties in Challenging an Accepted Theory.- 1.8. Further Difficulties-A "Soft" Theory.- 1.9. Still Further Difficulties-Selective Reviews.- 1.10. Conclusion.- Comments.- 2. Steric Assistance in Solvolytic Processes.- 2.1. Introduction.- 2.2. Steric Assistance in the Solvolysis of Highly Branched Alkyl Derivatives.- 2.3. Steric Assistance in the Relative Effec.
Author: Eric V. Anslyn
Publisher: University Science Books
ISBN: 9781891389313
Category : Science
Languages : en
Pages : 1148
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Book Description
In additionto covering thoroughly the core areas of physical organic chemistry -structure and mechanism - this book will escortthe practitioner of organic chemistry into a field that has been thoroughlyupdated.
Author: C. Rees
Publisher: Springer
ISBN: 366215286X
Category : Science
Languages : en
Pages : 351
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Book Description
In 1965 a book by P. Bartlett appeared under the title "The Nonclassical Ions" 1). The book is a collection of papers reprinted from various journals. The many reviews that have appeared since 2-22) are either antiquated (the book published in 1972 12) covers the literature mainly before 1968) or relatively biased (e.g., 3.4,10» on brief 2, 7,11). This review attempts to discuss the various points of view on the "nonclassical" carbocations. The main point is to establish the relative role of "nonclassical" and "classical" ions in various chemical processes. The author has followed P. Bartlett's advice 1) that when setting forth the achievements of the human mind one should see how we came to the modern understanding of a given problem (" ... how we know what we know"). The theory of "nonclassical" ions offers an explanation of many unique chemical, stereochemical and kinetic peculiarities of bicyclic compounds. It has expanded our knowledge on chemical bonds in carbocations by introducing electron-deficient bonds (as in boron hydrides). It has accounted for many rearrangements of stable cations. As a "side" result our knowledge has been extended about ionization processes in a solution, as well as about stereochemical methods. 2 Main Terms of Nonclassical Carbocations In 1939 Hevell, Salas and Wilson 23) assumed an intermediate, "bridge" ion 2 to be formed when camphene hydrochloride 1 is rearranged into isobornyl chloride 3. This happened 17 years after Meerwein first postulated the intermediate formation of "carbonium" ions in chemical reactions.
Author:
Publisher:
ISBN: 9781461341192
Category :
Languages : en
Pages : 328
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Book Description
Author: Francis A. Carey
Publisher: Springer Science & Business Media
ISBN: 0306468565
Category : Science
Languages : en
Pages : 830
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Book Description
Since its original appearance in 1977, Advanced Organic Chemistry has found wide use as a text providing broad coverage of the structure, reactivity and synthesis of organic compounds. The Fourth Edition provides updated material but continues the essential elements of the previous edition. The material in Part A is organized on the basis of fundamental structural topics such as structure, stereochemistry, conformation and aromaticity and basic mechanistic types, including nucleophilic substitution, addition reactions, carbonyl chemistry, aromatic substitution and free radical reactions. The material in Part B is organized on the basis of reaction type with emphasis on reactions of importance in laboratory synthesis. As in the earlier editions, the text contains extensive references to both the primary and review literature and provides examples of data and reactions that illustrate and document the generalizations. While the text assumes completion of an introductory course in organic chemistry, it reviews the fundamental concepts for each topic that is discussed. The Fourth Edition updates certain topics that have advanced rapidly in the decade since the Third Edition was published, including computational chemistry, structural manifestations of aromaticity, enantioselective reactions and lanthanide catalysis. The two parts stand alone, although there is considerable cross-referencing. Part A emphasizes quantitative and qualitative description of structural effects on reactivity and mechanism. Part B emphasizes the most general and useful synthetic reactions. The focus is on the core of organic chemistry, but the information provided forms the foundation for future study and research in medicinal and pharmaceutical chemistry, biological chemistry and physical properties of organic compounds. The New Revised 5th Edition will be available shortly. For details, click on the link in the right-hand column.
Author: Herbert Charles Brown
Publisher:
ISBN:
Category :
Languages : en
Pages : 301
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Book Description
Author:
Publisher: New Age International
ISBN: 9788122411775
Category :
Languages : en
Pages : 416
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Book Description
Author: Felix A. Carroll
Publisher: John Wiley & Sons
ISBN: 1119808642
Category : Science
Languages : en
Pages : 869
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Book Description
PERSPECTIVES ON STRUCTURE AND MECHANISM IN ORGANIC CHEMISTRY “Beyond the basics” physical organic chemistry textbook, written for advanced undergraduates and beginning graduate students Based on the author’s first-hand classroom experience, Perspectives on Structure and Mechanism in Organic Chemistry uses complementary conceptual models to give new perspectives on the structures and reactions of organic compounds, with the overarching goal of helping students think beyond the simple models of introductory organic chemistry courses. Through this approach, the text better prepares readers to develop new ideas in the future. In the 3rd Edition, the author thoroughly updates the topics covered and reorders the contents to introduce computational chemistry earlier and to provide a more natural flow of topics, proceeding from substitution, to elimination, to addition. About 20% of the 438 problems have been either replaced or updated, with answers available in the companion solutions manual. To remind students of the human aspect of science, the text uses the names of investigators throughout the text and references material to original (or accessible secondary or tertiary) literature as a guide for students interested in further reading. Sample topics covered in Perspectives on Structure and Mechanism in Organic Chemistry include: Fundamental concepts of organic chemistry, covering atoms and molecules, heats of formation and reaction, bonding models, and double bonds Density functional theory, quantum theory of atoms in molecules, Marcus Theory, and molecular simulations Asymmetric induction in nucleophilic additions to carbonyl compounds and dynamic effects on reaction pathways Reactive intermediates, covering reaction coordinate diagrams, radicals, carbenes, carbocations, and carbanions Methods of studying organic reactions, including applications of kinetics in studying reaction mechanisms and Arrhenius theory and transition state theory A comprehensive yet accessible reference on the subject, Perspectives on Structure and Mechanism in Organic Chemistry is an excellent learning resource for students of organic chemistry, medicine, and biochemistry. The text is ideal as a primary text for courses entitled Advanced Organic Chemistry at the upper undergraduate and graduate levels.
Author: Vladimir Aleksandrovich Barkhash
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 364
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Book Description
Author: P S Kalsi
Publisher: New Age International
ISBN: 9788122417661
Category : Physical organic chemistry
Languages : en
Pages : 612
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Book Description
The Book Provides A Self-Study Of Different Topics Of Organic Chemistry Viab Problem Solving. The Present 4Th Edition Has Been Completely Rewritten According To The Organic Chemistry Syllabus Of The Net (Csir) Examination. This Necessitated The Deletion Of Several Topics From The Third Edition And Incorporation Of New Ones. Emphasis Has Been Laid On A Variety Of New Reactions, Name Reactions, Reagents In Organic Synthesis And Incorporation Of Their Knowledge In The Entire Coverage Of Organic Chemistry In A Unique Way.A Thorough Study Of The Book Is Expected To Help The Student To Excel Not Only In The University Examination Including The Net Examination, But Also In His Learning Of Various Topics And Before Interview Boards. Several Topics Like Aromaticity, Pericyclic Reactions And Heterocyclic Chemistry Have Now Been Brought Up To Date And The Material Provided Is Complete In Itself.The Presentation Has Been So Designed So As To Thread Through The Entire Organic Chemistry By The Application Of The Knowledge Learnt In One Topic To Newer Situations In Other Topics. The Present Revised Edition Also Includes Numerous Important Developments Since The Third Edition Of The Book Was Published.
