Science of Synthesis provides a critical review of the synthetic methodology developed from the early 1800s to date for the entire field of organic and organometallic chemistry. As the only resource providing full-text descriptions of organic transformations and synthetic methods as well as experimental procedures, Science of Synthesis is therefore a unique chemical information tool. Over 1000 world-renowned experts have chosen the most important molecular transformations for a class of organic compounds and elaborated on their scope and limitations. The systematic, logical and consistent organization of the synthetic methods for each functional group enables users to quickly find out which methods are useful for a particular synthesis and which are not. Effective and practical experimental procedures can be implemented quickly and easily in the lab.// The content of this e-book was originally published in August 2003.

Science of Synthesis: Houben-Weyl Methods of Molecular Transformations is the entirely new edition of the acclaimed reference series Houben-Weyl, the standard synthetic chemistry resource since 1909. This new edition is published in English and will comprise 48 volumes published between the years 2000 and 2008.

Science of Synthesis is a quality reference work developed by a highly esteemed editorial board to provide a comprehensive and critical selection of reliable organic and organometallic synthetic methods. This unique resource is designed to be the first point of reference when searching for a synthesis strategy.

• Contains the expertise of presently 400 leading chemists worldwide.
• Critically evaluates the preparative applicability and significance of the synthetic methods.
• Discusses relevant background information and provides detailed experimental procedures

For full information on the Science of Synthesis series, visit the Science of Synthesis Homepage Series Editors: D. Bellus, S. V. Ley, R. Noyori, M. Regitz, E. Schaumann, I. Shinkai, E. J. Thomas, B. M. Trost, P. J. Reider.

14.1 Product Class 1: Pyrylium Salts
14.2 Product Class 2: Benzopyrylium Salts
14.3 Product Class 3: Pyranones and Pyranthiones
14.4 Product Class 4: Benzopyranones and Benzopyranthiones
14.5 Product Class 5: 3-Oxidopyrylium Salts and Their Thio and Benzo-Fused Analogues
14.6 Product Class 6: Thiopyrylium Salts
14.7 Product Class 7: Benzothiopyrylium Salts
14.8 Product Class 8: Thiopyranones and Thiopyranthiones
14.9 Product Class 9: Benzothiopyranones and Benzothiopyranthiones
14.10 Product Class 10: Selenopyrylium and Benzoselenopyrylium Salts
14.11 Product Class 11: Selenopyranones and Benzoselenopyranones
14.12 Product Class 12: Telluropyrylium and Benzotelluropyrylium Salts
14.13 Product Class 13: Telluropyranones and Benzotelluropyranones