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This collection of twenty-six articles by leading experts is the first truly comprehensive account of the gas-phase electron diffraction technique. It is written for the non-specialist users of structural information. Part A discusses the development and present capabilities of gas electron diffraction. Several contributions deal with the combined application of various techniques. Part B contains the structural information and also presents trends and interpretations of structural variations.

This collection of twenty-six articles by leading experts is the first truly comprehensive account of the gas-phase electron diffraction technique. It is written for the non-specialist users of structural information. Part A discusses the development and present capabilities of gas electron diffraction. Several contributions deal with the combined application of various techniques. Part B contains the structural information and also presents trends and interpretations of structural variations.

Chemistry of Natural Products, A Unified Approach, provides a planned account of the common features structural and stereochemical of naturally occurring organic compounds). This is the only approach to bring about effective understanding of their chemistry. A variety of examples have been given to illustrate varied aspects so that the range of structure and behaviour exhibited by these compounds is retained within the set framework. The increasing application of physical (spectroscopic) methods like IR, NMR, CD, ORD, MS, High Resolution Mass Spectroscopy using which, structural determinations are often done with very small or even microscopic quantities of the substance is emphasised, without undermining the importance of classical chemical methods. The section on problem solving helps to develop an analytical and critical evaluation of the data. The Second Edition reflects the significant and important developments that have taken place since the publication of the first edition, particularly with regard to the biological aspects of natural products. Unified approach: Discusses all classes of compounds. Unique approach: Discusses common structural and stereochemical features of naturally occurring organic compounds. Page extent increased by 200 pages. New chapter: Introduction.Revised Introduction for all chapters. Examples: About 100 examples across the book and 6 new per chapter. Correlation with spectral data. Problems: 5 additional problems.

The steric and stereoelectronic effects control the rate and stereochemical outcome of reactions. Hence, a decent understanding of the related concepts is essential for successful synthetic planning. The book attempts to address several important issues related to these concepts in a simplified manner, and is intended for graduate students. It lays stress on the important aspects of steric and stereoelectronic effects and their control on the conformational profile and reactivity features. The book covers the geometrical requirements for reactions at saturated and unsaturated carbons in both cyclic and acyclic systems, and the resultant stereochemical features. The aspect of geometrical flexibility is also covered with a few examples involving intramolecular reactions. It deals with the facial selectivity of nucleophilic additions to acyclic and cyclic carbonyl compounds, and explains how the steric and stereoelectronic effects control the same. The work comments on allylic strains and their stereochemical control on different reactions with the related conformational control. It is a must read to understand the control elements, the prominent among these elements are spiro-conjugation, periselectivity, torquoselectivity, a-effect, Hammett’s substituent constants, Hammond postulate, and Curtin-Hammett principle.

Number 88 in the well-known Oxford Chemistry Primer series introduces upper-undergraduate students to how the three-dimensional shapes of molecules influence their chemical and physical properties. It starts with an introduction to common stereochemical terms used throughout the book. Chapter two covers the structures of simple unstrained organic molecules followed by examples of strained molecules. The third chapter deals with conformational analysis of acyclic and carbocyclic molecules, ending with a short exposition of molecular mechanics. Chapter four is about stereoisomerism in molecules and compounds. A full description of enantiomerism and diastereomerism is followed by an explanation of the nomenclature for absolute and relative configurations of molecules and for topism. The book concludes with a survey of stereoselective and stereospecific reactions, including the use of chiral catalysts and auxiliaries, rules for predicting stereoselectivity, and double asymmetric synthesis.

The steric and stereoelectronic effects control the rate and stereochemical outcome of reactions. Hence, a decent understanding of the related concepts is essential for successful synthetic planning. The book attempts to address several important issues related to these concepts in a simplified manner, and is intended for graduate students. It lays stress on the important aspects of steric and stereoelectronic effects and their control on the conformational profile and reactivity features. The book covers the geometrical requirements for reactions at saturated and unsaturated carbons in both cyclic and acyclic systems, and the resultant stereochemical features. The aspect of geometrical flexibility is also covered with a few examples involving intramolecular reactions. It deals with the facial selectivity of nucleophilic additions to acyclic and cyclic carbonyl compounds, and explains how the steric and stereoelectronic effects control the same. The work comments on allylic strains and their stereochemical control on different reactions with the related conformational control. It is a must read to understand the control elements, the prominent among these elements are spiro-conjugation, periselectivity, torquoselectivity, a-effect, Hammett’s substituent constants, Hammond postulate, and Curtin-Hammett principle.