The 40th annual volume in this highly successful and unique series surveying the advances in the understanding of organic reaction mechanisms. In every volume the content is divided in the different classes of organic reaction mechanisms, including: Reaction of Aldehydes and Ketones and their Derivatives Reactions of Carboxylic, Phosphoric, and Sulfonic Acids and their Derivatives Oxidation and Reduction Carbenes and Nitrenes Elimination Reactions Radical Reactions   Molecular Rearrangements An experienced team of authors compile these reviews every year, so that the reader can rely on a continuing quality of selection and presentation. As a new service to the reader all reaction mechanisms leading to stereospecific products are highlighted. This reflects the needs of the organic synthetic community with leads to chiral reactions.